Garlic Extract
herbs
Garlic extract is a concentrated form of garlic (Allium sativum) containing bioactive compounds such as allicin, ajoene, and S-allyl cysteine. It is traditionally used to support cardiovascular health, immune function, and antioxidant defence. The supplement provides many of garlic's beneficial properties in a convenient form without the strong odour of fresh garlic.
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Benefits
Dosage
Typical Dose
500–1,000 mg daily
Upper Limit
2,000 mg daily
Timing
With meals to enhance absorption and minimise gastrointestinal upset
Forms & Bioavailability
Standardised extract powder
High when standardised to allicin content; absorption enhanced with fat
Aged garlic extract
Well-absorbed; lacks allicin but contains S-allyl cysteine and other stable compounds
Capsules
Moderate; depends on formulation and enteric coating
Side Effects
Interactions
Research Summary
Clinical studies support garlic extract's role in modest blood pressure and cholesterol reduction, though effects are typically modest. Research demonstrates antioxidant and antimicrobial properties in vitro, though human studies remain limited. Evidence quality varies; standardised extracts show more consistent results than unstandardised forms.
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The Bottom Line on Garlic Extract
Garlic Extract is moderately researched with promising but sometimes mixed evidence.It is most commonly used for cardiovascular support and blood pressure regulation. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Garlic Extract
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