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Limited evidencePhysical performance

Octacosanol

A long-chain alcohol from wheat germ and sugar cane wax, sold for stamina and endurance since the 1970s. Almost all supportive data is in rodents; the few human studies are very small and measured blood markers rather than performance.

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What the science says

  • Endurance and fatigue Limited evidence

    Rodent studies report longer running time to exhaustion and better post-exercise biochemistry with octacosanol supplementation. No adequately powered human trial has shown improved endurance performance.

  • Blood lipids and oxidative stress in athletes Limited evidence

    A randomized study in 26 male taekwondo athletes undergoing rapid weight loss gave 40 mg/day of octacosanol for six days and reported improved lipid profile and lower oxidative stress markers versus control. This is a single very small, very short study of blood markers, not of competitive performance.

  • Mechanism Limited evidence

    A review of lipolysis-stimulating supplements for endurance capacity places octacosanol among compounds with a plausible fat-oxidation rationale and thin clinical support.

Dosage & safety

Studied doseTypical label doses are 10–20 mg/day; the one small athlete study used 40 mg/day. No effective dose for performance has been established.
SafetyGenerally well tolerated at supplement doses, with occasional gastrointestinal upset or headache reported. Wheat-germ-derived products may not be suitable for people avoiding wheat, though octacosanol itself is a wax alcohol rather than a protein. Little data in pregnancy or breastfeeding, so avoid. Policosanol, the related sugar-cane wax mixture, has interacted with anticoagulants in some reports — mention it to your doctor if you take blood thinners.

How to take it

TimingTiming does not matter.
With food?With a meal containing fat, since it is a fatty alcohol and absorbs poorly on its own.
Worth knowingOctacosanol and policosanol are sold almost interchangeably but are not the same thing — check which one your label actually names before drawing conclusions from either literature.

Interactions

With medications

  • warfarin and other anticoagulants or antiplatelet drugs

    Policosanol, the related sugar-cane wax mixture, has shown antiplatelet activity comparable to low-dose aspirin in trials. tell your doctor if you take blood thinners

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does octacosanol improve endurance?

Octacosanol's endurance evidence is limited: rodent studies report longer running time to exhaustion, but no adequately powered human trial has shown better endurance performance. It has been sold for stamina since the 1970s without that human proof.

How much octacosanol should I take per day?

Typical octacosanol label doses are 10–20 mg/day, and the one small athlete study used 40 mg/day. No effective dose of octacosanol for performance has been established; take it with a meal containing fat for better absorption.

Is octacosanol the same as policosanol?

No, octacosanol and policosanol are sold almost interchangeably but are not the same thing: policosanol is a related sugar-cane wax mixture. Check which one your label names before drawing conclusions from either body of research.

Is octacosanol safe with blood thinners?

Policosanol, the related mixture that contains octacosanol, has shown antiplatelet activity comparable to low-dose aspirin, so tell your doctor if you take warfarin or other blood thinners. Octacosanol is otherwise generally well tolerated, with occasional stomach upset or headache.

Scientific references

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