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in the 1990s, who identified this peptide fragment as having cytoprotective properties in the gastrointestinal tract

A co-lyophilised blend reduces handling steps and the number of reconstitution events, which is convenient when a research protocol consistently uses the two peptides at a 1:1 mass ratio

One study showed NR at 300 mg/day increased human blood NAD+ ~50% after 8 weeks, whereas higher doses (1000 mg/day) roughly doubled NAD+ levels

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The FDA has not approved these peptides for obesity treatment (FDA guidance on unapproved peptides)

April 14, 2026 Not for human consumption