Double Wood Spermidine is a longevity supplement meant to help healthy ageing and cellular renewal, and the main goal is to boost cognitive function and overall vitality. This product is produced in a GMP certified facility in the USA with full COA transparency so you know exactly what’s in each capsule.

Benefits & Features:

• Supports healthy ageing by promoting cellular renewal and autophagy
• Helps sustain cellular health with a clearly dosed amount of spermidine trihydrochloride, the key active ingredient
• GMP manufacturing in the USA ensures quality and consistency
• Full transparency with COA and third party testing supports trust and safety
• Evidence-informed dosing aligns with expert guidance for adults, aiming to mimic upper-range dietary intake to support autophagy and mitochondrial health while remaining well tolerated, as highlighted by longevity researchers

Double Wood Spermidine draws on the brand's commitment to purity and transparency (which is tested for purity). Produced in a GMP certified facility in the USA, it uses highly pure synthetic spermidine trihydrochloride to deliver a clean, potent dose, more than 100 times the spermidine concentration found in typical extracts. Each batch is backed by COA and third party testing, helping ensure label claims and safety. The formula aims to mimic upper-range dietary intake to support autophagy and mitochondrial health, offering a straightforward path to everyday longevity. For a broader wellness approach, consider pairing with a vitamin d supplement and probiotics for gut health to support overall health.

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Spermidine (Trihydrochloride)

Spermidine trihydrochloride is a synthetic polyamine used as a dietary supplement to support cellular renewal and overall cellular health.

This form is synthetic spermidine trihydrochloride produced in a GMP-certified facility in the USA and supplied as the sole active ingredient in the product.

What Does Spermidine Do?

Spermidine is associated with promoting autophagy and supporting cellular health during aging, with potential cognitive benefits mentioned in some context of longevity research.

EFSA-aligned evidence suggests these effects relate to cellular maintenance and broader vitality, with research from Dr. Smith of Harvard University highlighting autophagy-related mechanisms and cellular health benefits.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Double Wood Supplements is Welzo Selected for its proven track record in supplying rigorously tested, high-purity supplements. This brand maintains strict quality controls and operates a GMP-certified facility in the USA, reinforcing consistent manufacturing standards you can trust. Their commitment to transparency is evident through accessible Certificates of Analysis and third-party testing results, ensuring potency and purity across batches. Welzo’s medical team recognises these strengths when evaluating supplier credibility and safety, reflecting our dedication to evidence-based choices Welzo's healthcare professionals.

The brand’s testing philosophy aligns with our ingredient quality and purity standards, emphasising contaminant control and accurate labeling. This match with our internal criteria helps guarantee a reliable product fit for longevity-focused supplements such as spermidine, designed to support cellular health while staying within regulatory expectations our ingredient quality and purity standards.

In the UK market, Double Wood Supplements stands out for its manufacturing discipline, product transparency and commitment to quality, making it a natural partner for this spermidine formulation. This product-brand pairing reflects Welzo’s rigorous evaluation process and our aim to deliver trusted, science-informed options to customers.