Herbal Extract
Black Garlic Extract
Also known as: aged black garlic, fermented garlic, Allium sativum (aged), black garlic
Black garlic is raw garlic that has been aged through a heating and fermentation process, resulting in a darker color and purported concentration of antioxidant compounds including S-allylcysteine and polyphenols. Limited clinical evidence supports health claims, though in vitro and animal studies suggest potential antioxidant and cardiovascular benefits.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Black Garlic Extract product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Pure Encapsulations Garlic Complex | 76 B+ | $0.99 |
| 2 | Pure Encapsulations PureDefense Collagen w/ Bone Broth powder | 69 B | $2.90 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Black Garlic Extract should I take?
The typical range is 500-2,000 mg daily (equivalent extract). Typically used daily for chronic health support; optimal duration unknown
When should I take Black Garlic Extract?
With meals. Can be taken with or without food; may cause less digestive upset than raw garlic when consumed with food.
Which form of Black Garlic Extract is best?
Extract powder. Other forms in the catalog: Capsules, Tablets, Whole aged cloves.
Is Black Garlic Extract safe?
Commonly reported: Mild gastrointestinal upset (less common than raw garlic), Body odor (less pronounced than raw garlic).
Which Black Garlic Extract supplement scores highest?
Pure Encapsulations Garlic Complex, at 76/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Antioxidant support
- Cardiovascular health
- Immune function support
- General wellness
How it works
- Increased antioxidant compounds (S-allylcysteine, polyphenols) compared to raw garlic
- Potential reduction of oxidative stress
- Possible modulation of cardiovascular markers
Dosage
- Typical range
- 500-2,000 mg daily (equivalent extract)
- Timing
- With meals
- With food
- Can be taken with or without food; may cause less digestive upset than raw garlic when consumed with food
- Duration
- Typically used daily for chronic health support; optimal duration unknown
- Special populations
- Pregnant/nursing women should consult healthcare provider; those on anticoagulants should monitor intake
Forms
- Extract powder· 70/100
- Capsules· 70/100
- Tablets· 70/100
- Whole aged cloves· 70/100
Safety
Common side effects
- Mild gastrointestinal upset (less common than raw garlic)
- Body odor (less pronounced than raw garlic)
Contraindications
- Bleeding disorders (garlic has mild anticoagulant properties)
- Concurrent use of anticoagulant medications (consult healthcare provider)
Products containing Black Garlic Extract
Top-scoring supplements in our catalog that list Black Garlic Extract on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Most human evidence is limited or preliminary. Some small clinical studies show modest effects on cardiovascular markers, but the body of clinical evidence is not robust. In vitro and animal data suggest antioxidant potential, but human RCT data is scarce and inconsistent.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
Related in Herbal Extract
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.