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Endurance & Stamina Supplements
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Shop endurance and stamina supplements for long training days. Choose from cordyceps, iron, creatine, BCAA’s, or an energy mix with electrolytes from top brands such as Thorne, Pure Encapsulations, XYMOGEN, Klean Athlete, Real Mushrooms, and more.
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12 products
What Are Endurance Supplements?
Endurance supplements are nutrients and extracts that runners, cyclists, swimmers and other athletes take to support energy production, oxygen delivery, and hydration during long repeated efforts. Some work inside the muscle cell, where the body turns food into usable energy. Others replace what you lose in sweat or fill gaps that hard training creates, such as low iron.
Most of them are taken daily for several weeks, alongside a training plan and enough carbohydrates and fluids. A single dose before a race rarely makes much difference. Steady use over a training block is how they are typically studied and used.
Types of Endurance Supplements
Cordyceps
Cordyceps is a fungus used for centuries in various traditional practices, particularly Chinese and Tibetan herbalism. Recent studies have begun to investigate the effects of Cordyceps on oxygen use and fatigue, with results largely modest and conflicting. It comes as capsules or as a powder you can mix into coffee or a smoothie.
CoQ10 (Ubiquinone and Ubiquinol)
CoQ10 helps the mitochondria in your cells produce energy, and muscles that work for hours depend on that process. Ubiquinone is the standard form, and ubiquinol is the form the body uses directly. People who take statins often choose CoQ10, since these drugs lower the body’s own levels.
Iron
Iron carries oxygen in your blood through hemoglobin. Runners lose iron through sweat and through foot strike, and women who train hard are at higher risk of running low. Iron bisglycinate is a form that’s often easier on the stomach. For iron, it can take up to 2-3 months to replete low levels.
Creatine
Creatine refills the quick energy your muscles use for short efforts. For endurance athletes, that means hill repeats, track intervals and a finishing sprint. The usual dose is 3–5 g a day. For creatine, it takes around 3-4 weeks for the muscles to build up to optimal levels when taken daily.
BCAAs
BCAAs are three amino acids: leucine, isoleucine and valine. Athletes take them after training, and some studies link them to less muscle soreness. Some formulas also include ATP.
Electrolytes
Sweat carries away sodium, potassium and magnesium, and on a long ride or run the losses add up. An electrolyte mix replaces them so you keep drinking and stay hydrated. It is most useful for sessions longer than 60–90 minutes or training in the heat.
