Provides fast, effective relief from tiredness. Contains caffeine and B vitamins. This multipack contains 3 packs each containing 100 tablets. Yeast Vite Food Supplement Tablets is a fast, gentle pick-me-up with caffeine and essential B vitamins for the speedy relief of mental and physical fatigue and general tiredness. Containing caffeine and essential B vitamins, Yeast Vite tablets are a gentle but effective solution to combating fatigue.