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Science-Backed

Science-Backed

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Curated by 20 Experts

Curated by 20 Experts

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Free Delivery in the US

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Boost your endurance and muscle output with Thorne Beta Alanine-SR, a sustained-release amino acid supplement designed for active individuals aged 50 and older.
Clinically studied to benefit athletic performance, this product helps resist fatigue and reduce delayed onset muscle soreness by supporting muscle pH. As an NSF Certified for Sport supplement, it ensures high standards of quality and safety for all users. Trusted by over 100 professional teams and partnered with U.S. Olympic Teams and Mayo Clinic, Thorne Beta Alanine-SR is an ideal choice for those committed to a longevity-focused fitness regimen. With 120 tablets per bottle, you'll receive 60 servings of enhanced endurance and performance benefits.
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