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Compound

Capsaicin

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Capsaicin. Chili pepper compound that mildly increases thermogenesis and reduces appetite.

How it works. TRPV1 agonist; topical depletes substance P from sensory neurons.

What the research supports. 2 graded claims. Strongest: Topical reduces neuropathic pain (strong).

How much to take. Typical dose: 30–120 mg/d oral; 0.025–0.075% topical.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

Common forms. Available as Topical cream, Capsules.

Key studies. 9 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Capsaicin. Anecdotes are not medical advice.

Capsaicin. Chili pepper compound that mildly increases thermogenesis and reduces appetite.

Molecular structureC18H27NO3 · 305.4 g/mol

What it is

Chili pepper compound that mildly increases thermogenesis and reduces appetite.

Also called

Cayenne extract

Food sources

Chili peppers

Goals

Fat LossChronic Inflammation

How it works

TRPV1 agonist; topical depletes substance P from sensory neurons.

Pathways

  • TRPV1 activation

Effects

  • ↑Energy expenditure (mild) increases
  • ↓Neuropathic pain (topical) decreases

What the research supports

Topical reduces neuropathic painstrong
Mild metabolic boostlimited

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
30–120 mg/d oral; 0.025–0.075% topical
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the topical cream form.
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Side effects & interactions

Common side effects

  • Burning sensation
  • Heartburn

Medication interactions

ACE inhibitorsminor

Worsens cough.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

  • Topical cream
  • Capsules

Key studies

9 studies cited in total.

Capsaicinoids and metabolic rate ↗
Meta-analysis · Appetite · 2012

Small but consistent increases in metabolic rate and satiety.

PubMed: Capsaicin — Topical reduces neuropathic pain ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Capsaicin and "Topical reduces neuropathic pain". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Capsaicin — Mild metabolic boost ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Capsaicin and "Mild metabolic boost". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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