What Are the Side Effects of Collagen Protein?

The possible side effects of gelatin, also called hydrolyzed collagen protein, include an unpleasant taste, a heavy feeling in the stomach, bloating, belching and heartburn, states WebMD. Some people may also suffer allergic reactions to gelatin.

Gelatin is an animal-based protein typically used for weight loss, says WebMD. It is also used to treat osteoporosis, osteoarthritis and rheumatoid arthritis. People sometimes use gelatin to strengthen their bones and fingernails, to make hair smoother and to speed recovery from an injury or after exercise. Gelatin is also added to medicines, foods and cosmetic products.

The collagen content of gelatin is one of the components of the body’s cartilage and bones, which is why some people believe that gelatin helps improve joint conditions like arthritis, explains WebMD. However, there is inadequate evidence to prove its effectiveness in treating osteoarthritis and osteoporosis, improving bone strength or aiding weight loss.

Gelatin is potentially safe when taken in food amounts and when used as medicine in higher amounts, notes WebMD. Evidence shows that it’s safe to take up to 10 grams of gelatin on a daily basis for up to six months. Because gelatin is derived from animal products, there is concern that unsafe manufacturing processes might result in contaminated gelatin products. While there is a low risk of contamination, most experts recommend avoiding the use of gelatin and other animal-based supplements.