Brewer's Yeast Dosages for Cats

A flea infestation can be annoying and unhealthy for both you and your cat. Adding brewer's yeast to your cat's food can be an effective method of flea control.

  1. Benefits

    • Brewer's yeast is comprised of thiamine (vitamin B), considered to be a flea repellent.

    Types

    • Brewer's yeast is available in tablet, flake, capsule or powder form.

    Size

    • A daily dose of 1 mg of thiamine, for every 5 lbs. of your cat's weight, is the appropriate dosage for flea control. For an average-size cat, this translates into 1 tsp. of brewer's yeast per day.

    Alternate Use

    • Dusting your cat's coat with brewer's yeast makes an effective flea powder.

    Warning

    • Some cats are allergic to yeast. If you see an adverse reaction, stop adding the brewer's yeast to their food.