Reactions that get worse over the first week, spread, or hurt sharply are a reason to pause and consult a clinician
De Souza RL, Matsuura M, Eckstein F, Rawlinson SC, Lanyon LE, Pitsillides AA
But, B12 mixes can have different strengths
Many adults do not produce sufficient butyrate due to diets low in the specific fibers and polyphenols that butyrate-producing bacteria require
A 2021 peer-reviewed review of NNMT in obesity and type 2 diabetes states explicitly that 'clinical trials targeting NNMT have not been reported' meaning every quantitative efficacy figure available for this compound comes from mice, and there is currently zero published human efficacy data
You can use all kinds of water: purified, distilled, spring, or deionized