This is an over the counter product - it does not require prescription.
Brewers Yeast & Garlic Powder
Natural Nutritional Supplement
Thomas Laboratories Brewer's Yeast & Garlic is an excellent natural, high
quality source of B complex vitamins and protein for dogs. Highly palatable.
Given to pets with skin conditioning needs during parasite season.
Dogs: 2 to 4 Teaspoons per day
Horses: 1 cup per day
Saccharomyces cerevisiae yeast grown on a media of ground yellow corn, hominy
fed corn gluten feed, wheat & rye middlings, diastatic malt and corn syrup,
and cane molasses and dried in such a manner as to preserve it's fermenting
activity, garlic powder, diatomaceous earth.