One clinical study even looked at doses up to NMN is sensitive to heat, moisture, and light, so dark amber glass bottles or plastic containers are best to choose, and brands that have clear storage instructions (like: store in a cool, dry place or refrigeration necessary)
High doses, repeated administration, vulnerable populations (pregnant animals), and sensitive tissues (gastrointestinal tract, reproductive organs) have all been evaluated
71 LojoN.RasicZ.Zenko SeverA.KolencD.VukusicD.DrmicD.et al (2016)
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Artralgias, exantemas (colagenosis)