Vitamin C

What is the best vitamin C supplement to take? For most healthy adults, a tested plain ascorbic acid. See when buffered, liposomal or corn-free fits better.

Vitamin C forms compared: the best one depends on your dose. What the evidence shows for ascorbic acid, buffered, Ester-C and liposomal, and who paid for it.

Nearly all commercial ascorbic acid begins as corn. What that means if you react to corn, and how to actually verify a corn-free vitamin C claim.

"Liposomal" is an unregulated label claim. How to judge the best liposomal vitamin C on encapsulation efficiency, third-party testing and ingredient source.

Ascorbic acid, buffered, Ester-C or liposomal? A research-backed comparison of the main vitamin C forms, what each costs you, and who funded the studies.