Research

Hormonal

Acute ingestion of 10 mg purified capsinoids increases resting energy expenditure and shifts substrate utilization toward lipid oxidation, but these effects do not persist during moderate-intensity exercise.

Take 10 mg of purified capsinoids (containing capsiate, dihydrocapsiate, and norhydrocapsiate) on an empty stomach, ideally 30 minutes before you sit down for work or rest, not before your workout. This specific dose has been shown to increase your resting calorie burn by about 20% and shift your body to burn more fat for fuel while you are inactive. Do not expect this to enhance your exercise performance or fat burning during the activity itself, as the metabolic boost from the exercise itself overrides the supplement's effect.

ModerateQualifiesMEDIUM confidence
The ingestion of 10 mg of capsinoids increased adrenergic activity, energy expenditure, and resulted in a shift in substrate utilization toward lipid at rest but had little effect during exercise or recovery.
Andrea R. Josse et al. · Nutrition & Metabolism · 2010

Why this rating

Small sample size (n=12), healthy young males, acute study design.

Source

Effects of capsinoid ingestion on energy expenditure and lipid oxidation at rest and during exercise

Andrea R. Josse et al. · Nutrition & Metabolism · 2010

DOI 10.1186/1743-7075-7-65

crossover · n=12Cited 92×
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DOI resolved against Crossref · corpus check 2026-06-10

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