Sunny Green Chlorophyll by Nutraceutical Corp.

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Acne. It is unclear if topical chlorophyll is beneficial in patients with acne. Details: Preliminary clinical research in young adults with acne shows that applying facial sheets (VIRTA-Healer, Aseptica) containing chlorophyll to one side of the face for 30 minutes twice weekly, in combination with light-emitting diode (LED) irradiation, improves acne severity and reduces acne counts by 32% more than LED irradiation alone after 2 weeks of treatment (93893).
• Allergic rhinitis (hay fever). It is unclear if oral chlorophyll is beneficial in patients with allergic rhinitis (hay fever). Details: Preliminary clinical research in adults with allergic rhinitis shows that taking oral chlorophyll 0.7 mg daily for 12 weeks reduces the use of rescue medications after 8 weeks, but does not improve symptoms or quality of life, when compared with placebo (97934).
• Colostomy odor. Although there has been interest in using oral chlorophyll for colostomy odor, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Constipation. Although there has been interest in using oral chlorophyll for constipation, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Genital herpes. Although there has been interest in using topical chlorophyll for genital herpes, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Halitosis. Although there has been interest in using oral chlorophyll for halitosis, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Herpes zoster (shingles). Although there has been interest in using topical chlorophyll for herpes zoster (shingles), there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Nonmelanoma skin cancer. Although there has been interest in using topical or intravenous chlorophyll for nonmelanoma skin cancer, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Obesity. Although there has been interest in using oral chlorophyll for obesity, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose.
• Pancreatitis. It is unclear if oral chlorophyll is beneficial in patients with pancreatitis. Details: Preliminary observational research in patients with chronic relapsing pancreatitis suggests that administering chlorophyll 5-20 mg intravenously divided 1-2 times daily for 1-2 weeks modestly improves pain and other symptoms of pancreatitis when compared to baseline (1324). The validity of these findings is limited by the lack of a comparator group.
• Wound healing. Although there has been interest in using oral chlorophyll for wound healing, there is insufficient reliable information about the clinical effects of chlorophyll for this purpose. More evidence is needed to rate chlorophyll for these uses.

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LIKELY EFFECTIVE

• Copper deficiency. Oral or intravenous copper is beneficial for treatment of copper deficiency. Details: Taking copper orally or intravenously is effective for treating copper deficiency and anemia due to copper deficiency. Copper deficiency is rare. It is seen most commonly in people receiving prolonged parenteral nutrition (7135). Oral cupric sulfate has been used in doses up to 0.1 mg/kg daily (7135). Copper 1-2 mg per day in parenteral nutrition solution has also been used (505).

POSSIBLY INEFFECTIVE

• Alzheimer disease. Oral copper does not seem to be beneficial for Alzheimer disease. Details: Preliminary clinical research shows that taking copper orotate dihydrate, providing 8 mg of elemental copper, daily for 12 months does not improve scores on evaluation scales for Alzheimer disease when compared with placebo (45949). There is also some concern that copper could have detrimental effects. Observational research has found that people with Alzheimer disease have higher levels of copper in their blood than people without the disease (95917); the clinical significance of this finding is unclear.

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Acne. Oral copper has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research shows that taking a specific combination product containing copper (NicAzel, Elorac Inc.) 1-4 tablets daily for 8 weeks reduces inflammatory lesions in patients with inflammatory acne when compared with baseline. Other ingredients in this product include nicotinamide, azelaic acid, zinc, pyridoxine, and folic acid; specific quantities are not known (90800). The validity of this finding is limited by the lack of a comparator group.
• Brain tumor. It is unclear if oral copper is beneficial for use in glioblastoma. Details: A moderate-sized open-label clinical study in adults with first recurrence of glioblastoma receiving alkylating chemotherapy shows that taking elemental copper 2.5 mg with disulfiram 400 mg daily for 6 months does not improve survival but does result in significantly more adverse effects (e.g., elevated liver enzymes) when compared with control. The trial was stopped early due to safety concerns (112376).
• Cardiovascular disease (CVD). Although there is interest in using oral copper for CVD prevention, there is insufficient reliable information about the clinical effects of copper for this purpose.
• Chemotherapy-induced acral erythema. Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months may reduce the incidence of grades 3 and 4 acral erythema (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Chemotherapy-induced anemia. Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months does not appear to reduce the incidence of grades 3 and 4 anemia (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Chemotherapy-induced diarrhea. Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months may reduce the incidence of grades 3 and 4 diarrhea (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Chemotherapy-induced leukopenia. Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months does not appear to reduce the incidence of grades 3 and 4 neutropenia or febrile neutropenia (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Chemotherapy-induced nausea and vomiting (CINV). Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months may reduce the incidence of grades 3 and 4 vomiting (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Chronic venous insufficiency (CVI). It is unclear if compression stockings containing copper are beneficial for lipodermatosclerosis in patients with CVI. Details: Preliminary clinical research shows that using compression stockings impregnated with copper for 8 weeks does not improve overall symptoms of lipodermatosclerosis secondary to chronic venous disease when compared with using a compression stocking without copper. However, the affected surface area may be reduced by approximately 16% by 2 weeks when copper-impregnated compression stockings are used (101809).
• Dental plaque. It is unclear if rinsing the mouth with copper is beneficial for reducing dental plaque. Details: Preliminary clinical research shows that rinsing the mouth with a solution of copper 1.1 mmol/L for 4 days decreases plaque accumulation when compared with a placebo solution (46006).
• Diarrhea. Oral copper has only been evaluated in combination with zinc; its effect when used alone is unclear. Details: Preliminary clinical research in children 6 months to 5 years of age presenting to a hospital in India with acute watery or bloody diarrhea shows that taking a solution providing zinc 2 mg/kg and copper 0.2 mg/kg orally daily for 2 weeks does not reduce the duration of diarrhea, the weight of stool, or the need for rehydration when compared with placebo (87166). It also does not seem to reduce the recurrence of diarrhea or improve weight gain over the next 3 months (95540).
• Oral mucositis. Oral copper has only been evaluated in combination with resveratrol; its effect when used alone is unclear. Details: A small clinical study in adults with advanced gastric cancers receiving docetaxel-based chemotherapy suggests that taking copper (Chelated Copper, JR Carlson Laboratories, LLC) with resveratrol three times daily for up to 6 months may reduce the incidence of grades 3 and 4 oral mucositis (112377). However, the interpretation of these findings is limited by the lack of a control group.
• Osteoarthritis. Although there is interest in using topical copper for osteoarthritis, there is insufficient reliable information about the clinical effects of copper for this condition.
• Osteoporosis. Oral copper has only been evaluated in combination with other minerals; its effect when used alone is unclear. Details: Preliminary clinical research in postmenopausal adults shows that taking copper 2.5 mg in combination with zinc 15 mg, manganese 5 mg, and calcium 1000 mg daily for 2 years can slow bone loss when compared with taking either calcium or the trace minerals alone (1994).
• Postoperative infection. It is unclear if copper-impregnated wound dressings are beneficial for the prevention of postoperative infection. Details: Preliminary clinical research shows that using a wound dressing impregnated with copper oxide 3% by weight reduces the incidence of a surgical site infection in the 30-day period following a caesarean section by 39%, but does not reduce length of hospital stay or readmission rate, when compared with a non-copper wound dressing. Eight patients would need to be treated with the copper-impregnated dressing to prevent one infection (105363). This study is limited by the use of a telephone questionnaire to assess the suspicion of infection.
• Systemic lupus erythematosus (SLE). It is unclear if oral copper is beneficial for improving symptoms of SLE. Details: Copper status does not appear to be associated with the risk of SLE (101810). Additionally, one small clinical study shows that taking copper 3 mg daily, alone or in combination with fish oil, for 24 weeks does not affect symptoms of SLE when compared with placebo (12953).
• Tinea pedis. Although there is interest in using topical copper for tinea pedis, there is insufficient reliable information about the clinical effects of copper for this condition.
• Wound healing. It is unclear if topical copper sulfate can improve the healing of umbilical granuloma. Details: A small clinical study in children 1-3 months of age with treatment-naïve umbilical granuloma shows that a single application of copper sulfate to the affected site results in complete resolution in 70% of patients, compared with 90% of patients receiving topical sodium chloride twice daily for 5 days. Some patients who received a second application of copper sulfate experienced full healing; however, it is unclear if this was due to the treatment or natural resolution (109403). More evidence is needed to rate copper for these uses.

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LIKELY EFFECTIVE

• Cystic fibrosis. Long-term nebulized hypertonic sodium chloride improves lung function and reduces pulmonary exacerbations in patients with cystic fibrosis. Details: Meta-analyses of clinical research in adults with cystic fibrosis show that, when taken along with a bronchodilator and other standard therapies, nebulized hypertonic sodium chloride in concentrations of 3% to 7%, up to 10 mL twice daily for 4 weeks, increases forced expiratory volume at one second (FEV1) when compared with isotonic saline (sodium chloride 0.9%) (26230,26230). This benefit was not seen at 48 weeks. Other clinical research in adults with cystic fibrosis shows that inhaling sodium chloride 7%, 4 mL twice daily for 48 weeks, does not improve FEV1 when compared with isotonic saline. However, chronic treatment with hypertonic saline does reduce the number of pulmonary exacerbations and increase the number of patients without pulmonary exacerbations when compared with isotonic saline (29402). It is not clear if this benefit occurs in children with cystic fibrosis. The Pulmonary Clinical Practice Guidelines Committee of the Cystic Fibrosis Foundation recommends that individuals with cystic fibrosis aged 6 years or older use nebulized hypertonic saline long-term to improve lung function, reduce the number of exacerbations, and improve quality of life (29403).

POSSIBLY EFFECTIVE

• Amphotericin B nephrotoxicity. Oral sodium chloride seems to prevent nephrotoxicity associated with use of amphotericin B. Details: Clinical research shows that administering oral or intravenous sodium chloride 150 mEq daily during treatment with amphotericin B can attenuate the rise in serum creatinine levels and preserve renal function when compared to treatment with amphotericin B alone (26226).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Bipolar disorder. It is unclear if oral sodium is beneficial in preventing lithium level fluctuations in patients with bipolar disorder. Details: A moderate-sized open-label clinical study in adults with type I bipolar disorder receiving lithium carbonate shows that taking sodium chloride 1 gram daily for 12 weeks along with dietary salt restriction of 1 gram daily reduces the percentage of patients with lithium level fluctuations above 0.8 mEq/L, but does not significantly affect serum sodium, potassium, aldosterone, or creatinine levels when compared with controls who were not salt restricted, but were advised not to consume additional salt at the table (112909). However, the interpretation of these findings is limited by missing data in both groups.
• Canker sores. Although there is interest in using topical sodium chloride for canker sores, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Congestive heart failure. It is unclear if oral sodium is beneficial in patients with acute decompensated heart failure requiring decongestive therapy with diuretics. Details: A moderate-sized clinical study in adults hospitalized with acute decompensated heart failure requiring high-dose intravenous furosemide shows that taking sodium chloride 2 grams three times daily for up to 96 hours does not affect patient weight or serum creatinine levels when compared with placebo (112911). However, the clinical relevance of this study is unclear and it may have been inadequately powered to detect a difference between groups.
• Conjunctivitis. Although there is interest in using ophthalmic sodium chloride for conjunctivitis, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Hyponatremia. Although there is interest in using oral sodium chloride for hyponatremia, there is insufficient reliable information about the clinical effects of oral sodium chloride for this condition.
• Pharyngitis. Although there is interest in using topical sodium chloride for pharyngitis, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Prematurity. It is unclear if oral sodium is beneficial for premature infants. Details: Preliminary clinical research in infants born at less than 32 weeks' gestation shows that adding sodium 4 mEq/kg daily to enteral feedings, starting from the 7th day after birth and continuing through the 35th day, reduces the risk of developing hyponatremia and improves weight gain when compared with adding water (98180). A small, open-label clinical study in newborns less than 35 weeks gestation shows that high sodium intake, defined as an average of 0.25% sodium in maintenance fluids, for 48 hours on day 2 and 3 after birth results in less weight loss within the first 72 hours of life when compared with control, but does not improve mortality, length of hospital stay, or complications from prematurity (112908). However, interpretation of these findings is limited by varied concentrations of sodium as an intervention. More evidence is needed to rate sodium for these uses.

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LIKELY SAFE ...when used orally and appropriately in amounts commonly found in foods. There is insufficient reliable information available about the safety of chlorophyll when used orally in medicinal amounts or when used topically or as an injection.

PREGNANCY AND LACTATION:
Insufficient reliable information available.

(Read more about CHLOROPHYLL)

LIKELY SAFE ...when used orally and appropriately. Copper is safe in amounts that do not exceed the tolerable upper intake level (UL) of 10 mg daily (7135).

POSSIBLY SAFE ...when copper oxide is used topically. A wound dressing impregnated with copper oxide in concentrations of 3% by weight has been used with apparent safety in one clinical trial (105363).

POSSIBLY UNSAFE ...when used orally in doses exceeding the UL of 10 mg daily. Higher intake can cause liver damage (7135,45865). Kidney failure and death can occur with ingestion of as little as 1 gram of copper sulfate (17).

CHILDREN: LIKELY SAFE
when used orally and appropriately. Copper is safe in amounts that do not exceed the tolerable upper intake level (UL) of 1 mg daily for 1-3 years of age, 3 mg daily for 4-8 years of age, 5 mg daily for 9-13 years of age, and 8 mg daily for 14-18 years of age (7135).

CHILDREN: POSSIBLY UNSAFE
when used orally in doses exceeding the UL (7135). Higher intake can cause liver damage (7135).

PREGNANCY: LIKELY SAFE
when used orally and appropriately. Copper is safe in amounts that do not exceed the tolerable upper intake level (UL) of 8 mg daily for those 14-18 years of age or 10 mg daily for those 19 years and older (7135).

PREGNANCY: POSSIBLY UNSAFE
when used orally in doses exceeding the UL. Higher intake can cause liver damage (7135).

LACTATION: LIKELY SAFE
when used orally and appropriately. Copper is safe in amounts that do not exceed the tolerable upper intake level (UL) of 8 mg daily for those 14-18 years of age or 10 mg daily for those 19 years and older (7135).

LACTATION: POSSIBLY UNSAFE
when used orally in doses exceeding the UL. Higher intake can cause liver damage (7135).

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LIKELY SAFE ...when used orally and appropriately. Sodium is safe in amounts that do not exceed the Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams daily (100310). Higher doses can be safely used therapeutically with appropriate medical monitoring (26226,26227).

POSSIBLY UNSAFE ...when used orally in high doses. Tell patients to avoid exceeding the CDRR intake level of 2.3 grams daily (100310). Higher intake can cause hypertension and increase the risk of cardiovascular disease (26229,98176,98177,98178,98181,98183,98184,100310,109395,109396,109398,109399). There is insufficient reliable information available about the safety of sodium when used topically.

CHILDREN: LIKELY SAFE
when used orally and appropriately (26229,100310). Sodium is safe in amounts that do not exceed the CDRR intake level of 1.2 grams daily for children 1 to 3 years, 1.5 grams daily for children 4 to 8 years, 1.8 grams daily for children 9 to 13 years, and 2.3 grams daily for adolescents (100310).

CHILDREN: POSSIBLY UNSAFE
when used orally in high doses. Tell patients to avoid prolonged use of doses exceeding the CDRR intake level of 1.2 grams daily for children 1 to 3 years, 1.5 grams daily for children 4 to 8 years, 1.8 grams daily for children 9 to 13 years, and 2.3 grams daily for adolescents (100310). Higher intake can cause hypertension (26229).

PREGNANCY AND LACTATION: LIKELY SAFE
when used orally and appropriately. Sodium is safe in amounts that do not exceed the CDRR intake level of 2.3 grams daily (100310).

PREGNANCY AND LACTATION: POSSIBLY UNSAFE
when used orally in higher doses. Higher intake can cause hypertension (100310). Also, both the highest and the lowest pre-pregnancy sodium quintile intakes are associated with an increased risk of hypertensive disorders of pregnancy, including gestational hypertension and pre-eclampsia, and the delivery of small for gestational age (SGA) infants when compared to the middle intake quintile (106264).

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METHOTREXATE (Trexall, others) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = B Theoretically, chlorophyll may reduce the clearance of methotrexate.  Details In one case report, a 54-year-old male developed delayed clearance of intravenous high-dose methotrexate with concomitant use of chlorophyll. When chlorophyll was stopped 2 days prior to methotrexate treatment, methotrexate clearance was unaffected (93891).

PHOTOSENSITIZING DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = B Theoretically, concomitant use of chlorophyll with photosensitizing drugs may have additive effects.  Details Chlorophyll has been reported to cause photosensitization. In two case reports, pseudoporphyria developed after oral intake of chlorophyll (93892). Theoretically, concomitant use with other photosensitizing drugs may exacerbate this effect (1326).

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CONTRACEPTIVE DRUGS Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, taking copper with contraceptive drugs might increase the levels and toxic effects of copper.  Details A meta-analysis of clinical studies suggests that chronic use of oral contraceptives increases serum copper levels by a mean of 57 mcg/dL. In most people, this resulted in levels above the normal reference range for copper (92395).

PENICILLAMINE (Cuprimine, Depen) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, taking copper with penicillamine might decrease the absorption of penicillamine; separate dosing by at least 2 hours.  Details Copper chelates penicillamine, which decreases its absorption and may reduce its clinical effects (4412,4453,4531,4535,9630).

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ANTIHYPERTENSIVE DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = A Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.  Details High intake of dietary sodium can increase systolic and diastolic blood pressure (26222). Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease (26223).

CORTICOSTEROIDS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.  Details Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone (4425).

LITHIUM Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = B Altering dietary intake of sodium might alter the levels and clinical effects of lithium.  Details High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion (26225). Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate (26224,26225). Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L (112909). Patients taking lithium should avoid significant alterations in their dietary intake of sodium.

SODIUM-CONTAINING DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.  Details The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population (100310). Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.

TOLVAPTAN (Samsca) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = C Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.  Details Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia (29406). Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.

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General ...Orally, topically, or intravenously, significant adverse effects have not been reported. However, a thorough evaluation of safety outcomes has not been conducted.
Most Common Adverse Effects:
Orally: Photosensitization.
Topically: Dermatitis, photosensitization.
Serious Adverse Effects (Rare):
Orally: Pseudoporphyria.

Dermatologic ...Topically, chlorophyll cream has been reported to cause dermatitis (41912). Orally, chlorophyll can cause photosensitization (1326). Certain carotenoids such as beta-carotene and canthaxanthin seem to prevent or lessen the photosensitivity that results from taking chlorophyll (1326). Oral consumption of chlorophyll has been associated with the development of pseudoporphyria in case reports. Two females developed easily traumatized blisters on their hands after consumption of a Swisse Chlorophyll drink (93892). In one case series, four males developed skin blisters and skin erosions after taking oral chlorophyll 100-1200 mg daily for 6.5 months up to 7 years. Resolution of symptoms was delayed for 2-8 months after chlorophyll discontinuation (97933).

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General ...Orally, copper is generally well tolerated when consumed in doses below the tolerable upper intake level (UL).

Dermatologic ...Contact dermatitis caused by copper has been reported rarely. A case report describes a 5-year-old male who developed recurrent fingertip dermatitis and a positive skin test to copper after playing with toy cars made with a copper-containing alloy (95538). Also, in a small clinical trial in children 1-3 months of age with umbilical granuloma, 3 of 33 children receiving a single topical application of copper sulfate developed superficial burns, whereas no superficial burns occurred in those receiving topical sodium chloride (109403).
In one case report, a 68-year-old male with type 2 diabetes and peripheral neuropathy developed second- and third-degree burns after wearing a copper-containing compression sock on the right leg for 3 hours while sitting in the sun. The patient received treatment with topical silver sulfadiazine and oral clindamycin. After 6 weeks, the patient was found to have multiple persistent wounds containing necrotic tissue which required debridement, daily dressing changes, and tubular compression. It is thought that the heat conductance of copper magnified the effects of sun exposure in this case (109402).

Endocrine ...There is evidence from observational studies that people with diabetes (type 1 or type 2) have higher copper levels in their blood than people without diabetes, although not all studies have shown this (95537). It is not known if elevated copper levels contribute to development or worsening of diabetes.

Hematologic ...A case report of copper overdose in a 28-year-old male resulted in hemolysis exacerbated by glucose-6-phosphate dehydrogenase deficiency. The patient was hospitalized, received D-penicillamine chelation, blood transfusion, and ultimately, 4 cycles of plasmapheresis which led to clinical recovery (112378).

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General ...Orally, sodium is well tolerated when used in moderation at intakes up to the Chronic Disease Risk Reduction (CDRR) intake level. Topically, a thorough evaluation of safety outcomes has not been conducted.
Serious Adverse Effects (Rare):
Orally: Worsened cardiovascular disease, hypertension, kidney disease.

Cardiovascular ...Orally, intake of sodium above the CDRR intake level can exacerbate hypertension and hypertension-related cardiovascular disease (CVD) (26229,98176,100310,106263). A meta-analysis of observational research has found a linear association between increased sodium intake and increased hypertension risk (109398). Observational research has also found an association between increased sodium salt intake and increased risk of CVD, mortality, and cardiovascular mortality (98177,98178,98181,98183,98184,109395,109396,109399). However, the existing research is unable to confirm a causal relationship between sodium intake and increased cardiovascular morbidity and mortality; high-quality, prospective research is needed to clarify this relationship (100312). As there is no known benefit with increased salt intake that would outweigh the potential increased risk of CVD, advise patients to limit salt intake to no more than the CDRR intake level (100310).
A reduction in sodium intake can lower systolic blood pressure by a small amount in most individuals, and diastolic blood pressure in patients with hypertension (100310,100311,106261). However, post hoc analysis of a small crossover clinical study in White patients suggests that 24-hour blood pressure variability is not affected by high-salt intake compared with low-salt intake (112910). Additionally, the available research is insufficient to confirm that a further reduction in sodium intake below the CDRR intake level will lower the risk for chronic disease (100310,100311). A meta-analysis of clinical research shows that reducing sodium intake increases levels of total cholesterol and triglycerides, but not low-density lipoprotein (LDL) cholesterol, by a small amount (106261).
It is unclear whether there are safety concerns when sodium is consumed in amounts lower than the adequate intake (AI) levels. Some observational research has found that the lowest levels of sodium intake might be associated with increased risk of death and cardiovascular events (98181,98183). However, this finding has been criticized because some of the studies used inaccurate measures of sodium intake, such as the Kawasaki formula (98177,98178,101259). Some observational research has found that sodium intake based on a single 24-hour urinary measurement is inversely correlated with all-cause mortality (106260). The National Academies Consensus Study Report states that there is insufficient evidence from observational studies to conclude that there are harmful effects from low sodium intake (100310).

Endocrine ...Orally, a meta-analysis of observational research has found that higher sodium intake is associated with an average increase in body mass index (BMI) of 1. 24 kg/m2 and an approximate 5 cm increase in waist circumference (98182). It has been hypothesized that the increase in BMI is related to an increased thirst, resulting in an increased intake of sugary beverages and/or consumption of foods that are high in salt and also high in fat and energy (98182). One large observational study has found that the highest sodium intake is not associated with overweight or obesity when compared to the lowest intake in adolescents aged 12-19 years when intake of energy and sugar-sweetened beverages are considered (106265). However, in children aged 6-11 years, usual sodium intake is positively associated with increased weight and central obesity independently of the intake of energy and/or sugar-sweetened beverages (106265).

Gastrointestinal ...In one case report, severe gastritis and a deep antral ulcer occurred in a patient who consumed 16 grams of sodium chloride in one sitting (25759). Chronic use of high to moderately high amounts of sodium chloride has been associated with an increased risk of gastric cancer (29405).

Musculoskeletal ...Observational research has found that low sodium levels can increase the risk for osteoporosis. One study has found that low plasma sodium levels are associated with an increased risk for osteoporosis. Low levels, which are typically caused by certain disease states or chronic medications, are associated with a more than 2-fold increased odds for osteoporosis and bone fractures (101260).
Conversely, in healthy males on forced bed rest, a high intake of sodium chloride (7.7 mEq/kg daily) seems to exacerbate disuse-induced bone and muscle loss (25760,25761).

Oncologic ...Population research has found that high or moderately high intake of sodium chloride is associated with an increased risk of gastric cancer when compared with low sodium chloride intake (29405). Other population research in patients with gastric cancer has found that a high intake of sodium is associated with an approximate 65% increased risk of gastric cancer mortality when compared with a low intake. When zinc intake is taken into consideration, the increased risk of mortality only occurred in those with low zinc intake, but the risk was increased to approximately 2-fold in this sub-population (109400).

Pulmonary/Respiratory ...In patients with hypertension, population research has found that sodium excretion is modestly and positively associated with having moderate or severe obstructive sleep apnea. This association was not found in normotensive patients (106262).

Renal ...Increased sodium intake has been associated with impaired kidney function in healthy adults. This effect seems to be independent of blood pressure. Observational research has found that a high salt intake over approximately 5 years is associated with a 29% increased risk of developing impaired kidney function when compared with a lower salt intake. In this study, high salt intake was about 2-fold higher than low salt intake (101261).

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