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|Ascorbic Acid |
Drugs search, click the first letter of a drug name: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 Home Ascorbic Acid( Vitamin C ) Pronouncation: (ASS-kor-bik acid)Class: Vitamin Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Revitalose-C-1000 (Canada) Timedose Vitamin C (Canada) Mechanism of ActionPharmacologyEssential vitamin believed important for synthesis of cellular components, catecholamines, steroids, and carnitine. PharmacokineticsAbsorptionAbsorbed almost completely from distal small intestine. DistributionDistributed throughout water-soluble compartments. Adrenal cortex, leukocytes, platelets, and pituitary gland contain high concentrations. EliminationExcreted in the urine. Indications and UsagePrevention and treatment of scurvy. Unlabeled UsesTreatment of idiopathic methemoglobinemia; combination therapy with methenamine to increase acidity of urine. Although not proven scientifically, prevention of common colds and treatment of cancer, asthma, atherosclerosis, burns, and other wounds. Topical vitamin C may photoprotect against UVR because of its antioxidant and anti-inflammatory properties. ContraindicationsStandard considerations. Dosage and AdministrationAdultsPO Recommended daily allowance 60 mg; average protective dose 70 to 150 mg/day. Nicotine useAdults The RDA for smokers is 100 mg/day because of an increased utilization of vitamin C. High Dose TherapyAdults Taper vitamin C prior to discontinuing supplementation. ScurvyAdults IV/IM/subcutaneous 75 to 150 mg/day; up to 6 g/day has been administered without toxicity. Enhanced Wound HealingAdults PO 300 to 500 mg/day for 7 to 10 days has been given. ParenteralAdults Used in acute deficiency or when oral absorption is uncertain. Avoid rapid IV administration. Storage/StabilityRefrigerate when possible, although storage at room temperature is acceptable. Drug InteractionsNone well documented. Laboratory Test InteractionsAmine-dependent tests for occult blood in stoolMay cause false-negative results. Urine glucose determinationsMay cause false-negative determinations. Adverse ReactionsCNSFaintness or dizziness may occur with rapid IV administration. GIDiarrhea; nausea; vomiting. GenitourinaryExcessive doses over long period of time may cause precipitation of cystine, oxalate or urate crystals in kidney. MiscellaneousInjection site irritation may occur with IM or subcutaneous administration. PrecautionsPregnancyCategory A . ( Category C in doses above the RDA). LactationExcreted in breast milk. Tartrazine SensitivitySome products contain tartrazine, which can precipitate breathing difficulties in sensitive individuals. Sulfite SensitivitySome products contain sulfites, which may precipitate a reaction in sensitive individuals. Excessive dosesDiabetic patients, patients prone to renal calculi, patients on sodium restricted diets, and those taking anticoagulants should not take excessive doses (more than 5 g/day) over extended periods of time. Patient Information
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