PERQUE Sleep Guard – 90 Capsules

Riboflavin (as riboflavin 5'-phosphate), Vitamin B6 (as pyridoxal 5'-phosphate), L-Tryptophan, Silica (Equisetum botanical), Croscarmellose, C16 & C18 alkyls (from whole, untreated palm fruit and leaf), Vegetable capsule.

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.

PERQUE was founded in 1987 by Dr Russell Jaffe, a physician, clinical pathologist, immunologist and biochemist, and is based in Ashburn, Virginia, in the United States. The company has always sold its formulas through doctors and healthcare professionals rather than through mass-market retail, and every product carries a full-disclosure label with no hidden or inactive ingredients. PERQUE guarantees 100% potency and activity for the entire shelf life of each product, uses forms of nutrients selected for bioavailability, and formulates without citrus, MSG, wheat, gluten, corn, dairy, yeast, soy, sulphates, phosphates (other than coenzymes) or preservatives. That transparent, practitioner-first approach aligns closely with Welzo's commitment to clear, quality-led nutrition, and Welzo's healthcare professionals assessed the brand for alignment with our standards before adding it to our range. Sleep Guard reflects PERQUE's preference for nutrients in the forms the body actually uses. It pairs 500 mg of L-tryptophan, the whole essential amino acid rather than 5-HTP, with pyridoxal 5'-phosphate and riboflavin 5'-phosphate, the coenzyme forms of vitamins B6 and B2 that do not need enzymatic activation. A small amount of plant silica from horsetail is included, and the only other components are the vegetable capsule, croscarmellose and palm-derived alkyls, all declared by weight. The vegetarian capsule, non-GMO sourcing and the absence of gluten, dairy, soy, yeast and preservatives make the product straightforward to recommend across a wide range of dietary needs. This attention to detail reinforces our trust in their quality philosophy.