list of fda approved glutathione 2018 Advisory No.2024-0159 || Public Health Warning Against the Purchase and Consumption the Unregistered Food Supplement “AMSB Capsules 1000mg Capsules Dietary Supplement” Our Science – Nacuity Pharmaceuticals
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So, the FDA, for now at least, allows NMN and similar supplements to be sold openly on the market

Metabolites 12:371

doi: 10.1128/spectrum.04370-22 68 IshikawaH.MatsumotoS.OhashiY.ImaokaA.SetoyamaH.UmesakiY.et al

Plant Physiol 184:15631572