Trust What's Inside

Backed by science. Built for performance.

✅ Manufactured in a GMP-Certified, FDA-Registered Facility
 Every sachet is produced under strict Good Manufacturing Practices in a facility registered with the U.S. Food & Drug Administration.

✅ Made with GRAS-Certified Ingredients
 Formulated using ingredients that are Generally Recognized As Safe (GRAS) — including sodium bicarbonate, sodium citrate, and citric acid.

✅ Free from Banned Substances
 fastr. ZoneX is formulated without any ingredients on the WADA prohibited list. Safe for serious competitors and everyday runners alike.
 Third-party testing in progress.

✅ No Preservatives. No Artificial Dyes. No Fillers.
 Just a clean, effective formula designed to help you hold your pace longer without wrecking your gut.

✅ Made for Tolerance. Built for Results.
 Our system is designed to reduce GI distress while delivering performance you can feel.