Name
VIT A
Mode of Action
VIT A HAS AN IMPORTANT PHYSIOLOGICAL ROLE IN VISUAL CYCLE IN THE RETINA OF EYE. IN VIT A DEFICIENCY RODS ARE AFFECTED MORE THAN CONES, IRREVERSIBLE STRUCTURAL CHANGES WITH PERMANENT NIGHT BLINDNESS OCCUR IF THE DEPRIVATION IS LONG TERM. IT PROMOTES DIFFERENTIATION AND MAINTAINS STRUCTURAL INTEGRITY OF EPITHELIA ALL OVER THE BODY. IT IS ALSO USEFUL FOR MAINTENANCE OF SPERMATOGENESIS AND FOETAL DEVELOPMENT.
Dosage
5,000-50,000 UNITS DAILY FOR 2 DAYS TO BE REPEATED AFTER 2 WEEKS DEPENDING UPON THE DISEASE OR DEFICIENCY.
Drug Group
[VITAMIN] , [VITAMIN A]
Cross Reaction
ITS ABSORPTION MAY BE REDUCED BY THE PRESENCE OF NEOMYCIN, CHOLESTYRAMINE, OR LIQUID PARAFFIN. AN INCREASED RISK OF HYPERVITAMINOSIS A IF VIT A IS CO-ADMINISTERED WITH SYNTHETIC RETINOIDS SUCH AS ASITRETIN, ISOTRETINOIN, AND TRETINOIN.
Drug Interaction
Drugs Side Effect
Drug Categories
Special Precaution
Drug Safety
Monograph