Fatty Acid
Mct
Also known as: Medium-chain triglycerides, MCT, Caprylic acid/Capric acid oil, C8/C10 oil
MCT oil is a dietary fat composed of medium-chain triglycerides (6-12 carbon chains) that are rapidly absorbed and metabolized, potentially supporting ketone production and energy availability. Research supports its use for cognitive function, weight management support, and athletic performance, though effects are modest and individual responses vary.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Mct product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Sports Research Keto Omega-3 with Salmon Oil Softgels | 84 A- | $1.07 |
| 2 | Carlson MCT & Omega-3 | 84 A- | $0.72 |
| 3 | NOW Foods Men's Active Sports Multi | 76 B+ | $0.66 |
| 4 | Nutricost MCT Oil | 70 B | $0.40 |
| 5 | Carlson MCT & Omega-3 Liquid | 58 C+ | $2.30 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Mct should I take?
The typical range is 5-15 grams (5-15 mL) daily. Can be used continuously as a dietary fat source; effects on cognition and energy typically appear within 1-2 weeks
When should I take Mct?
Morning or pre-workout for energy; with meals for tolerance. Recommended, especially for digestive tolerance; can be taken alone if well-tolerated.
Which form of Mct is best?
powder. Other forms in the catalog: Liquid oil, Softgels, Powder (emulsified), Caprylic acid (C8), Capric acid (C10), Blended C8/C10, Powder (70% MCT oil with carrier).
Is Mct safe?
Commonly reported: Gastrointestinal upset (nausea, diarrhea, cramping), Headache, Appetite changes, Transient fatigue during adaptation.
Which Mct supplement scores highest?
Sports Research Keto Omega-3 with Salmon Oil Softgels, at 84/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- rapid energy source
- ketogenic diet support
- cognitive function
- athletic performance
- Cognitive function and mental clarity
- Energy and endurance support
- Weight management adjunct
- Rapid energy availability
- Quick energy source
- Potential cognitive function support
- Fat loss support (as part of caloric deficit)
How it works
- Rapid hepatic oxidation and ketone body production
- Quick absorption and metabolism compared to long-chain fats
- Potential enhancement of mitochondrial ATP production
- May increase fat oxidation and reduce appetite hormones
Dosage
- Typical range
- 5-15 grams (5-15 mL) daily
- Timing
- Morning or pre-workout for energy; with meals for tolerance
- With food
- Recommended, especially for digestive tolerance; can be taken alone if well-tolerated
- Duration
- Can be used continuously as a dietary fat source; effects on cognition and energy typically appear within 1-2 weeks
- Special populations
- Start with 5 grams or less to assess tolerance; those with fat malabsorption or GI sensitivity should introduce gradually
Forms
- powder· 70/100
- Liquid oil· 70/100
- Softgels· 70/100
- Caprylic acid (C8)· 70/100
- Capric acid (C10)· 70/100
- Blended C8/C10· 70/100
Safety
Common side effects
- Gastrointestinal upset (nausea, diarrhea, cramping)
- Headache
- Appetite changes
- Transient fatigue during adaptation
Contraindications
- Gallbladder disease or post-cholecystectomy (use cautiously)
- Severe fat malabsorption disorders
- Acute pancreatitis
Products containing Mct
Top-scoring supplements in our catalog that list Mct on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Good evidence from multiple RCTs showing benefits for cognitive performance, energy availability, and modest weight management effects. More established than many novel nootropics but effects are typically modest and subject-dependent.
Grade B: Some human trials support key claims; further confirmation needed.
Related in Fatty Acid
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.