a recent safety analysis found no anaphylaxis in hundreds of patients receiving high-dose IV thiamine, suggesting the risk is very low in practice
Perhaps most notably, the researchers observed no adverse effects even at high doses
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
I have the same thing
Gibbons, G
It can stop the body from absorbing Vitamin B12