What it is
Regulatory status: dietary supplement or food
Mechanism evidence: human
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Why people use it
- Modest blood-pressure reduction
- Cardiovascular support
Evidence at a glance
Some trial pools report modest blood-pressure reductions, but preparation differences and study quality limit claims for an unspecified allicin extract.
Confidence: weak
Safety & interactions
Known side effects, interactions and use limits from reviewed sources.
Garlic supplements can cause gastrointestinal symptoms and may increase bleeding tendency, especially around surgery or with anticoagulant or antiplatelet medicines.
- anticoagulants and antiplatelet medicines
Forms and variants
This review does not automatically apply to:
- aged garlic extract
- garlic oil
- raw garlic
- deodorized garlic powder without stated allicin yield
Seen in protocols
Public protocols that include Garlic allicin extract. Open one to see the full context and source.