Side effects from collagen supplements can include allergic reactions and stomach upset. Stacy Lu Stacy Lu is a health journalist in the Washington, D.C. area. She's written for The New York Times ...
Osteoarthritis. Taking collagen type II by mouth for up to 6 months seems to improve self-reported symptoms of osteoarthritis, such as stiffness and pain. But it's not clear if it can prevent the ...
Show More Pregnancy and breast-feeding: There isn't enough reliable information to know if collagen type I is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results