
"Very quick delivery. Used 3 times, each order arrived the next day before 12:00. Product quality is exactly as described."
"Reliable & original products, with fast next day delivery. Have been using Welzo for over a year now."
"Welzo is great, lots of support from customer service who are easy to get a hold of and quick delivery."
Dvojité doplňky dřeva L-Serine
L-serin je aminokyselina, která pomáhá v růstu a zdraví neuronů a pomáhá při produkci purinů, pyrimidinů a aminokyselin, jako je tryptofan, L-cystin a glycin.
Purchase options
Subscribe & save
Save 5%Fast delivery · Cancel anytime
- Easy Pause or Cancel
- Best Price Guarantee
- 60-Day Returns
- Priority Support
One-time purchase
Standard price, no subscription
Quantity
100% Money back guarantee, no questions asked
Secure Transaction
L-serin je aminokyselina, která pomáhá v růstu a zdraví neuronů a pomáhá při produkci purinů, pyrimidinů a aminokyselin, jako je tryptofan, L-cystin a glycin. Pomáhá také při růstu a udržování nových buněk. Tělo produkuje určitý L-serinec, ale nestačí na to, aby vyhovoval jeho potřebám, takže se doporučuje dietní nebo doplňkový příjem.
- GTIN
- 859793007303
- Manufacturer
- Double Wood Supplements
- Best buy
- 6 to 24 months+
Shop related categories
United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.
Welzo is a UK-based health platform. Orders ship from the UK.
Please consult the product packaging for accurate instructions on how to use the product.
The Active Ingredient Is: L-Serine
L-Serine is an amino acid involved in normal brain biochemistry and supports neuronal health. This form occurs naturally in dietary proteins and is commonly used in supplements to support brain function, including phospholipid synthesis and neurotransmitter production.
What Does L-Serine Do?
L-Serine participates in phospholipid synthesis for brain cell membranes and assists with the production of tryptophan and serotonin, supporting normal mood and sleep-related processes. Dr. Yamamura of Sleep Medicine at Osaka University found improvements in subjective sleep quality with L-Serine supplementation.
This supplement is not intended to diagnose, treat, cure, or prevent any disease.
Double Wood Supplements has earned a standout track record for quality, transparency and consistent, high‑calibre manufacturing. This brand is built on USA production with GMP‑compliant facilities, and a clear commitment to third‑party verification that reinforces trust with both practitioners and customers. Every batch is rigorously tested by an independent laboratory to verify purity and potency, with Certificates of Analysis available, reinforcing our confidence in what you receive. The emphasis on microbial and heavy metals screening further enhances safety and reliability, aligning with the standards we require. our expert team of doctors, nurses, and nutritionists reviewed Double Wood’s process and found compelling evidence of robust quality practices, while the certifications we require are effectively demonstrated in their approach. This brand’s proven purity verification and accessible documentation make it a natural partner for this L‑Serine formulation.
Part of the Welzo System™
Test, supplement, enhance, and move, all in one place.
Frequently Asked Questions
Everything you need to know about this product.



