Claimed outcome NAD+ changes Evidence level Cell and animal evidence What research currently shows Blocking NNMT can preserve nicotinamide, a building block used to make NAD+
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Some participants achieved weight loss of approximately 24% of body weight at 48 weeks approaching levels reported with some bariatric surgical procedures, though no direct head-to-head comparisons have been conducted and long-term durability beyond the trial period remains unknown
Interactions with Medications Vitamin B12 has the potential to interact with certain medications, including diabetic prescriptions, metformin, proton pump inhibitors, antagonists and antibiotics
Deficiency has been recognized in infants of vegetarian mothers who were breast fed, even though the mothers had no symptoms of deficiency at the time
Compounding of unknown risks: Combining two compounds with incomplete human safety data multiplies the uncertainty considerably