It usually produces less weight loss than tirzepatide, but it has the longest outcomes record in the class: fewer cardiovascular events, slower kidney decline, and years of diabetes-trial safety data
61:104-108 Masayuki Ikeda, Makoto Asai, Takahiro Moriya, Masami Sagara, Shojiro Inou, Shigenobu Shibata, Methylcobalamin amplifies melatonin-induced circadian phase shifts by facilitation of melatonin synthesis in the rat pineal gland, Brain Research, Volume 795, Issues 12, 8 June 1998, Pages 98-104, ISSN 0006-8993, Carmen Wheatley Cobalamin in inflammation III glutathionylcobalamin and methylcobalamin/adenosylcobalamin coenzymes: the sword in the stone
Fish oil or copper Fish oil supplements could be another option if your doctor suggests taking them
No studies on healthy humans yet, but enough people report a mental boost from MCT oil that its worth trying for yourself