Our mission
The supplement marketplace
We believe finding the right supplements shouldn't mean juggling dozens of websites. GymStack curates 100+ trusted brands in one place — from protein and creatine to vitamins and wellness.
- Transparent sourcing from reputable brands
- UK-based customer service you can reach
- Evidence-based content on our blog
Our promise
Dependable delivery
We ship with Royal Mail 48-hour tracked and DPD next day. Free UK delivery on orders over £75 — because getting your stack on time matters.
- Fast dispatch on working days
- Tracked shipping on every order
- Customer service Mon–Fri, 9am–5pm
Company information
Who we are
GymStack is the trading name of GYM STACK LTD, company number 15404858, registered in England and Wales.
Registered office: 103 Osprey House, Bedwyn Mews, Reading, Kennet Island, England, RG2 0PR. Trading address is the same as the registered office.
We are a UK online retailer. We sell third-party sports nutrition brands; we do not manufacture those brands. Contact us at office@gymstack.uk or +44 787 347 1528, Monday–Friday, 9am–5pm (UK).
Fitness creators, coaches and athletes can apply to our affiliate programme — typically up to 10% commission on qualifying referred sales.