My provider recommended OPTUM as part of a vitamin regiment to alleviate some of the mood issues I'd been having. I've never felt better! I'm clear headed, thinking faster, and my mood has noticeably improved in a way other B complexes haven't come close to. I love that these are formulated by actual medical providers who understand how the compounds interact and honed in on their benefits.
taking it because doc said to. I cant tell a difference.