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
Course-based unless treating a documented deficiency.
Who it's actually for
Vegetarians, dialysis patients, and specific metabolic conditions.
Safe upper limit
UnverifiedNo formal limit; 2 g daily is typical
Gut bacteria convert it to TMAO, which some studies associate with cardiovascular risk. Causes a fishy body odour at high doses.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Thyroid medication — Levothyroxine, carbimazole, methimazole
- Blood thinners / antiplatelets — Warfarin, apixaban, rivaroxaban, clopidogrel, aspirin
Run your full list through the interaction check.
Practical notes
- Meat eaters get plenty from diet.
- The TMAO question is unresolved — worth knowing before taking it long-term.