Vitamins

Measurements in grams unless otherwise indicated.
µg = micrograms 1µg = 40 IU
Vitamin A, (µg retinol) µg Adequate Intake - 19.8; Recommended Daily Allowance - 24.7;
Safe Upper Limit - 2,469 (IU)
Vitamin D3, (Cholecalciferol) µg Adequate Intake - 0.14; Recommended Daily Allowance - 0.17; Safe Upper Limit - 19
Vitamin E, (alpha tocopheral), mg Adequate Intake - 0.74; Recommended Daily
Allowance - 0.94
Vitamin K, (menadione) mg Adequate Intake - 0.025; Recommended Daily Allowance - 0.025
Thiamin, mg Adequate Intake - 0.11; Recommended Daily Allowance - 0.14
Riboflavin, mg Adequate Intake - 0.079; Recommended Daily Allowance - 0.099
Pyridoxine, (B6) mg Minimum Requirement - 0.05; Recommended Daily Allowance - 0.06
Niacin, (B3) mg Adequate Intake - 0.79; Recommended Daily Allowance - 0.99
Pantothenic Acid, (B5) mg Minimum Requirement - 0.11; Recommended Daily Allowance - 0.14
Folic Acid, (B9) µg Minimum Requirement - 15; Recommended Daily Allowance19
Biotin, (B7) aka, Vitamin H, µg Adequate Intake - 1.5; Recommended Daily Allowance - 1.9
Vitamin B12 (Cobalamine) µg Adequate Intake - 0.44; Recommended Daily Allowance - 0.56
Choline mg Minimum Requirement - 60; Recommended Daily Allowance - 63

Note:
Vitamin C, (ascorbic acid) The liver of cats has the key enzyme L-gulono-Y-lactone oxidase, (EC 1.1. 3.8), which is able to synthesize the needed ascorbic acid from glucose. The NRC warns against high intake of ascorbic acid, stating the following: "High intake of ascorbic acid may act as a prooxidant and induce lipid peroxidation." This includes Fenton's reaction, which will enhance iron absorption and cause a resulting overdose of this mineral. This reaction is reduced with an increase in Vitamin E levels in the diet. (page 234). There is also a suspicion that increased ascorbic acid intake may predispose a cat to oxalate urolithiasis, however there is no data to sustain this theory.