MZ-STORE L-Tryptophan Powder

MZ-STORE L-Tryptophan Powder is a dietary supplement designed to support the nervous system and emotional balance by providing a pure source of the essential amino acid L-tryptophan, a precursor to serotonin.

The brand was founded in 2005 in Poland, originally starting as the online retailer 'Muscle Zone' (muscle-zone.com). Over nearly two decades, the company evolved from a 19-year-old startup into a significant e-commerce and manufacturing entity. Since 2023, the brand has shifted a large portion of its operations to in-house production. Today, the product is manufactured 'from A to Z' at the company’s own facility located in Pomerania, Poland.

MZ-STORE S.A. remains the ultimate owner and operator of the brand. Headquartered in Reda, Poland, the company oversees various private labels including Apollo's Hegemony and MZ PURE, distributing health and fitness supplements across Europe, including markets such as Scandinavia and the Middle East.