Timing is everything for many things in life — including when to take medication like metformin, sold under the brand names Glucophage, Fortamet, Riomet, and Glumetza. So, when’s the best time to take ...

Water-soluble vitamins, like B vitamins and vitamin C, can be taken anytime, with or without food. Fat-soluble vitamins, such as vitamins D, A, E, and K, should be taken with a meal that contains fat.

Collagen is a protein that plays many more roles in the body than people might think, which is one of the reasons that it has become increasingly popular as a supplement. But is there a best time to ...