vitamin C (redirected from Cetebe)

vitamin C

n.

See ascorbic acid.

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vitamin C,

n a water-soluble vitamin found in citrus fruits, cruciferous vegetables, leafy greens, peppers, and strawberries. Has been used to remedy deficiencies (including low levels caused by taking aspirin and birth control pills); to prevent and treat upper respiratory conditions; to prevent reflex sympathetic dystrophy, easy bruising, and skin aging; to treat high blood pressure and bedsores; and to improve behavior associated with autism. Caution in those prone to develop kidney stones, with kidney disease, excessive iron, deficient copper, or intestinal conditions and for patients taking warfarin and heparin. Caution is advised for children and pregnant or lactating women, for whom the maximum daily dose is 2000 mg. Also called
ascorbate.

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vitamin C

see ascorbic acid.

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vitamin C C-responsive dermatosis

scaling and hair loss occur in calves and piglets fed diets low in vitamin C. Serum levels of the vitamin are low and recovery follows supplementation.

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megavitamin therapy The administration of excess or 'hyper-doses' of water-soluble vitamins, either physician-guided–eg, to treat neuropathies, or self-prescribed by health-food advocates. See Decavitamin, Orthomolecular medicine, Vitamin.

Megavitamins, adverse effects  

Thiamin CNS hyperresponsiveness–convulsions, Parkinson's disease–thiamin antagonizes l-dopa, sensory neuropathy–destruction of dorsal axon roots

Niacin/nicotinic acid & niacinamide/nicotinamide Exacerbation of asthma–histamine release, cardiac disease–arrhythmias, GI symptoms, eg nausea, vomiting, diarrhea, anorexia, DM–hyperglycemia, gout–↑ uric acid, liver disease–enzyme leakage, hepatocellular injury, portal fibrosis or massive necrosis, cholestatic jaundice, peptic ulcer disease–histamine release, ↑ acidity, skin disease

Vitamin B₆ Paresthesia, headaches, asthenia, irritability

Vitamin C ↑ Iron absorption, possibly iron overload, evoking diarrhea, renal calculus formation and possibly inhibiting the bacteriolytic activity of neutrophils, G6PD deficiency–↑ red cell lysis, megaloblastic anemia–↓ vitamin B₁₂ absorption, nephrolithiasis–oxaluria Diagn Clin Testing 1990; 28:27