2. Corn beard tea is a kind of tea beverage made from dried corn. This beverage contains cryptoxanthin, vitamin C, pantothenic acid, inositol, vitamin K, sitosterol, malic acid and other nutrients. If you drink it in a small amount correctly, it is nontoxic and has no side effects. Both healthy people and people who take corn silk tea for adjuvant treatment can drink a small amount for a long time.