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Compound

MCT C8 (Caprylic Acid)

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MCT C8 (Caprylic Acid). Pure C8 medium-chain triglyceride for ketone production.

How it works. Rapidly oxidized to ketones via liver beta-oxidation.

What the research supports. 1 graded claims. Strongest: Raises blood ketones (moderate).

How much to take. Typical dose: 10–30 g.

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

Stacking. Pairs well with Omega-3 (EPA/DHA), Alpha-GPC or CDP-choline.

Common forms. Available as Capsule or softgel, Powder, Sublingual or buccal, Liposomal liquid.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried MCT C8 (Caprylic Acid). Anecdotes are not medical advice.

MCT C8 (Caprylic Acid). Pure C8 medium-chain triglyceride for ketone production.

Molecular structureC8H16O2 · 144.21 g/mol

What it is

Pure C8 medium-chain triglyceride for ketone production.

Food sources

Endogenously produced or biosynthesized moleculeStandardized pharmaceutical- or food-grade supplementCombined with cofactors that improve absorption or activity

Goals

Brain & Cognitive

How it works

Rapidly oxidized to ketones via liver beta-oxidation.

Pathways

  • Rapidly oxidized to ketones via liver beta-oxidation

Effects

  • ↑blood ketones increases

What the research supports

Raises blood ketonesmoderate

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
10–30 g
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 capsule or softgel form.
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Side effects & interactions

Common side effects

  • GI upset
  • Diarrhea

Medication interactions

Prescription medications (general)minor

Always disclose MCT C8 (Caprylic Acid) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

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

Combines with

Pairs well

  • Omega-3 (EPA/DHA)Membrane fluidity and neuronal signaling support.
  • Alpha-GPC or CDP-cholineProvides choline substrate for acetylcholine synthesis.

Common forms

  • Capsule or softgel
  • Powder
  • Sublingual or buccal
  • Liposomal liquid

Key studies

8 studies cited in total.

PubMed: MCT C8 (Caprylic Acid) — Raises blood ketones ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching MCT C8 (Caprylic Acid) and "Raises blood ketones". Filter by RCT, meta-analysis, or year on the results page.

PubMed: MCT C8 (Caprylic Acid) — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching MCT C8 (Caprylic Acid) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: MCT C8 (Caprylic Acid) — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching MCT C8 (Caprylic Acid) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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