Xendurance Extreme Endurance (US)/Lactic Acid Buffer

Frequently asked questions

What does Extreme Endurance do?

Xendurance markets Extreme Endurance as a daily lactic-acid-buffer tablet — designed to support training tolerance by buffering exercise-induced acidosis.

Where can I buy it?

Amazon UK at £46.99 is the listed retailer.

Is the lactate-buffering claim supported?

The brand has published research on its formula. As with any performance supplement, individual response varies and the magnitude of any effect should be weighed against cost.

Is it Informed Sport tested?

Yes — every batch screened against the WADA banned-substance list.

How does this compare to beta-alanine?

Beta-alanine is the most-studied intramuscular buffer (it raises muscle carnosine). Extreme Endurance is positioned around different chemistry. The two aren't equivalent on the published evidence.

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