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Garlic oil

Also known as: garlic, garlic extract

Garlic oil contains sulphur compounds formed when garlic is processed. It is used mainly to support the heart, blood vessels and immunity.

What it is used for

  • Modest blood pressure reduction – weak to moderate evidence (more for extracts)
  • Cholesterol – weak evidence
  • Preventing colds – weak evidence

Forms and how they differ

garlic oil (macerate)

common softgels; active content is low and variable

aged garlic extract

most studied for blood pressure

powder with allicin potential

standardised for allicin – check the label

When to take it

With food, which reduces garlic breath and heartburn.

Pairs well with

Works well with a vegetable-rich diet and omega-3.

Do not combine / separate

Use caution with blood thinners, aspirin and omega-3 – it may increase bleeding risk. Stop before surgery as your doctor advises.

Watch out for

In pregnancy and breastfeeding only in normal dietary amounts. If you have a bleeding disorder, liver or kidney disease or take medicines (especially blood thinners and HIV drugs), consult your doctor.

Safety

Garlic breath and digestive upset are common. Do not exceed the label dose.

Practical tip

Let fresh chopped garlic sit for 10 minutes before cooking – more active compounds form.

Products containing Garlic oil 1

Garlic oil 1500 mg1 500 mg / capsuleHeart & vesselsImmunityAntioxidant
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

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Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.