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Description
The same confusion follows NAD around, which is a coenzyme, not a peptide either

Some sources suggest the compound is well-absorbed orally based on rat pharmacokinetic data, while others argue that subcutaneous injection provides more reliable absorption
[DOI] [PMC free article] [PubMed] [Google Scholar] 38.Bhate V, Deshpande S, Bhat D, Joshi N, Ladkat R, Watve S, Fall C, de Jager CA, Refsum H, Yajnik C

This leaves a stable, dry compound that is suitable for research applications

This benefit is particularly valuable for individuals with prediabetes, metabolic syndrome, or type 2 diabetes