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4Optional

MCT oil

Also sold as Medium-chain triglycerides, C8, caprylic acid

A fat source used in ketogenic diets; not a fat-loss agent.

4TrustedSupp Tier System™ · Tier 4Take by choice, or not at all
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.

How long to take it

Ongoing as a dietary fat if it suits you.

Who it's actually for

People on ketogenic diets, and some clinical feeding situations.

Safe upper limit

Unverified
No formal limit; start at 1 tsp — GI tolerance is the constraint
Causes cramping and diarrhoea if ramped too fast. Caution in liver disease.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.

Interactions to know about

  • Liver disease or impairmentHepatitis, cirrhosis, fatty liver
  • Diabetes medicationMetformin, insulin, gliclazide, SGLT2 inhibitors

Run your full list through the interaction check.

Practical notes

  • Build up slowly or you will regret it.
  • It is 8–9 calories per gram like any fat — it doesn't create a deficit.