No IGF-1 elevation side effect
You should contact your doctor immediately if you experience severe symptoms, such as difficulty breathing, sudden swelling, or severe muscle weakness
NNMT's job: Take nicotinamide (a NAD+ precursor) and methylate it essentially tagging it for disposal
Instead of overcoming the metabolic adaptation, higher doses frequently exacerbate side effects like nausea, fatigue, and gastrointestinal distress
Mount Sinai, Vitamin B12 deficiency anemia, Niranjan N Singh, Florian P Thomas, Alan L Diamond at al, Vitamin B12-Associated Neurological Diseases, Medscape Mathew, A.R