Garlic extract

These are the amounts published trials administered — not a recommendation, and not a dose to copy. Trial participants were screened, supervised and given a characterised preparation. What is in a retail bottle is frequently not what was studied, and the amount that suits one person is not general advice.

• Studied for Blood pressure

  600–2400 mg

  Moderate

  Aged garlic extract or standardised powder, divided doses · Powder trials commonly specify 1.3% allicin yield; aged extract trials specify S-allylcysteine content · 8–24 weeks

  The four-fold dose range reflects incompatible preparations rather than dose-finding, and several of the aged-extract trials were funded by the manufacturer.

• Studied for Blood lipids

  600–1200 mg

  Limited

  Garlic powder tablet, divided doses · 8–24 weeks

  Early trials reported meaningful cholesterol reductions; better-controlled later trials, including one using raw garlic and two supplement forms, found essentially nothing.

This is general information about food, not medical advice. It cannot diagnose, treat or replace guidance from a clinician who knows your history.

None of the timings below were directly compared in a trial. They reflect how the research happened to dose, or what the pharmacology implies — which is not the same as a timing being better.

• 🍽️With food

  Not enough

  Taken with food to reduce reflux and stomach irritation. Enteric coating on allicin products exists to survive stomach acid, which is formulation reasoning rather than a tested schedule.

  Timing was not directly compared. This reflects convention or how the compound behaves in the body, not a trial showing this window works better.