Which browsers/devices are supported?

Desktop: Chrome, Firefox, Safari, Microsoft Edge
Mobile: Chrome (Android), Safari (iOS), Firefox, Edge

Our store works best on current versions of the major browsers:

We rely on JavaScript and cookies for login, cart, and checkout—please keep them enabled.

Quick tips if something looks off

Update your browser to the latest version.
Try an incognito/private window (bypasses cached scripts and extensions).
Disable ad-blockers, privacy extensions, or VPNs temporarily if checkout errors appear.
If you started in an in-app browser (e.g., Instagram/TikTok), tap the menu and open in your default browser.
Clear cache/cookies for extremepeptides.com, then reload.
Try a second device (phone vs. desktop) to isolate the issue.