Spermidine 8 mg

Double Wood's Spermidine is a straightforward, single-ingredient capsule delivering 10mg of 99%-pure synthetic spermidine trihydrochloride per serving, positioned as a lower-cost, allergen-free alternative to wheat-germ-extract spermidine products, with a genuine batch-level published COA. However, no human clinical trial has tested spermidine trihydrochloride at this dose, the available RCTs (Cortex 2018, JAMA Network Open 2022) all used a different, plant-derived wheat-germ-extract form at roughly 0.9-3.3mg/day, and the larger, longer 2022 follow-up trial found no significant cognitive benefit at that lower dose, so this dossier assigns Tier 4 (ingredient RCT evidence at a different form/dose) rather than a higher tier. Buyers should also know the EU's only Novel Food authorization for a spermidine ingredient covers wheat-germ extract specifically (held by TLL The Longevity Labs), leaving an open regulatory question about whether Double Wood's synthetic 3HCL formula can be lawfully sold as a food supplement in the EU. The single most important thing to know: this is a reasonably well-documented, fairly priced synthetic spermidine product, but its clinical evidence is borrowed from a different ingredient form at a lower dose, not evidence generated on this exact product.