Endurance Essentials
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Founded by Nick Bare in 2012, in his college apartment in Western Pennsylvania.
- ✓2 science-backed ingredients
- No major concerns identified
Good
Above average — minor trade-offs worth knowing about
Independent analysis No brand partnerships
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Ingredient science
Cross-referenced with PubMed & Examine.com
Vitamin D supports bone, muscle and immune health; deficiency is common in athletes who train indoors or live far from the equator.
Iron is essential for carrying oxygen; deficiency is common in endurance athletes (especially women) and impairs performance. Supplement only if a blood test shows you need it.
Magnesium supports muscle and nerve function and sleep; many athletes fall short of the recommended intake. Supplementing helps mainly when intake is low. Glycinate and malate forms are well absorbed and gentle on the stomach.
Zinc supports immune function and tissue repair; athletes lose some in sweat. Helpful if your diet is low in it.
Needed for blood clotting and bone proteins; often paired with vitamin D. Evidence for bone benefits in healthy adults is mixed. Talk to a doctor if you take blood thinners.
Quality standards
What these mean →1 of 5 standards Pello tracks · Third-party tested for banned substances
Tested for sport
- NSF Certified for SportVerified with NSF · Oct 5, 2026 ↗
Tested for substances banned in sport, with the formula and label reviewed and the manufacturing facilities inspected.
- Informed Sport
- Cologne List
Food & sourcing
- USDA Organic
- Non-GMO Project Verified
Diet claims
- Vegan: not stated
Brand or retailer label claim, not a certification.
- Gluten-free: yes
Brand or retailer label claim. In the US a gluten-free label means under 20 ppm gluten.
- Dairy-free: yes
From the allergen list, where one is available.
Certifications are as listed on the product's page at The Feed. NSF Certified for Sport is also checked against NSF's own database. Certifications can lapse, so check the certifier's search before you rely on one, especially if you're drug tested.
Transparency & Sources
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