A tolerable upper intake level (UL)the amount you can safely take without risk of severe side effectswas never set for it because it has a low potential for toxicity, and the body does not store it in excess (NIH-a, 2021)
this was used to estimate richness
I myself have bad histamine intolerance, and over the past few months it's started seeming more and more likely that I also have some degree of mast cell activation syndrome

Sources: Journal of Translational Medicine , National Library of Medicine Do More, Age Less B12/MIC INJECTION BENEFITS Feel energized while fighting off fatigue Ignite your metabolism to support weight loss goals Enhance your mental clarity, focus & memory Support your liver to flush out toxins & naturally detox your body Maintain the connections between neurons (called synapses) to potentially offset the risk of Alzheimers* B12/MIC Injections How It Works Unique combination of vitamin B12 + methionine, inositol, choline (MIC) Methionine is an essential amino acid that helps break down excess body fat in the liver Inositol is a B-complex vitamin that helps metabolize fats, regulates appetite, and may help with overall mood Choline is an essential nutrient that promotes liver function and helps regulate "bad" cholesterol B12, an essential vitamin the body needs but can't produce, magnifies all of MIC's benefits What AgelessRx customers are saying The above testimonials are from real AgelessRx customers sourced from Trustpilot.com

More importantly, body composition is shifting