The intestinal microbiota generates n -butyrate as the predominant form of butyrate, which is metabolized into butyryl-CoA and directly regulates cellular butyrylation
It can, however, be injected at a "deep subcutaneous" level, which is essentially the border between cutaneous and muscular
Andrew Huberman: Four times a week
Earlier recommendations advocated treatment of the cobalamin C defect with a combined approach that utilizes vitamin B12 plus betaine to provide a substrate for the conversion of homocysteine into methionine through betaine-homocysteine methyltransferase, and folic acid to enhance the remethylation pathway (164)
The combination isnt for everyone, but when used strategically, it can provide targeted support for energy, detoxification, and cellular resilience