Double Wood Supplements L-Serine helps brain health and sleep quality, delivering sharper cognitive function and calmer nights, thanks to premium quality, independently tested L-Serine. We've built Double Wood on quality, openness, and American manufacturing you can count on. Each capsule is ethically sourced and tested for purity, so you feel confident taking it daily. This product line also offers options like a creatine or vitamin d supplement to support broader wellness goals.

Benefits & Features:

• Supports brain health and cognitive function with L-Serine, an essential amino acid for neuronal messaging.
• Helps deeper sleep with fewer wake ups and more restful nights, so you feel refreshed.
• Provides a reliable daily dose in capsules, aiding steady levels.
• Purity assured by independent testing.
• Manufactured in America in a GMP-certified facility with independent testing.

Double Wood Supplements L-Serine is made in a GMP-certified USA facility and is independently tested for purity and potency. Each batch is screened for contaminants and the Certificate of Analysis is available online, so you can check the label matches what you get. The formula relies on a clean single ingredient with non-GMO and gluten free ingredients, keeping things straightforward and easy to fit into daily routines. This is quality you can rely on, from a brand built on honesty and clarity.

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: 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.