With so many longevity supplements on the market, NAD+ vs NMN and NAD+ vs Resveratrol are two of the most common comparisons UK shoppers search for in 2026. MyNad+ breaks down how each compound works so you can make an informed choice. NAD+: The Coenzyme Itself NAD+ supplementation delivers the active coenzyme directly, without relying on the body's own conversion process. This is the approach used in every MyNad+ kit. NMN: A Precursor Molecule Nicotinamide mononucleotide (NM