Brewer's yeast, a by-product of beer production, has been used as a nutritional supplement for centuries. It is rich in B vitamins, minerals, proteins and fiber, offering a variety of health benefits.

Simply dissolve two tablespoons of brewer’s yeast powder or one cube in warm water, creating a compress to hold on the lengths. Dr. Berg Nutritionals. Premium Nutritional Yeast Flakes. $32.

Powder Form: Combine 1–2 teaspoons of Brewer's Yeast powder in smoothies, yoghurt, cereal, or juice. Tablet Form: Take the dose provided on the label, typically 2–3 tablets a day.