Black Garlic
Research reviewed: Up until 03/2026
Black Garlic (Aged Black Garlic (Allium sativum)) is a dietary supplement with 4 published peer-reviewed studies involving 109 participants, researched for Cardiovascular & Antioxidant, Clinical trials.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Cardiovascular & Antioxidant
StrongClinical trials
ModerateResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Cardiovascular & Antioxidant
To assess black garlic extract on lipid profile and antioxidant status.
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To assess black garlic extract on lipid profile and antioxidant status.
Dose
Black garlic extract 6g daily
Participants
60 patients with mild hypercholesterolaemia
Duration
12 weeks
Results
Black garlic significantly reduced total cholesterol and LDL while increasing HDL. Antioxidant capacity significantly improved vs white garlic control. S-allylcysteine preserved during aging process.
How They Measured It
Total cholesterol, LDL, HDL, triglycerides, antioxidant capacity (ORAC, TAC)
To evaluate aged black garlic on blood pressure in hypertensive patients.
Study Type
Randomised, double-blind, placebo-controlled
Purpose
To evaluate aged black garlic on blood pressure in hypertensive patients.
Dose
Aged black garlic 2.4g daily
Participants
49 subjects with hypertension
Duration
12 weeks
Results
Aged black garlic significantly reduced systolic blood pressure (-10 mmHg). Improved arterial stiffness and inflammatory markers. Effects superior to raw garlic.
How They Measured It
Systolic and diastolic blood pressure, blood flow, inflammation markers
Clinical trials
To investigate the effects of Black Garlic in effects of an optimized aged garlic extract on cardiovascular disease risk factors in moderate hypercholesterolemic subjects: a randomized, crossover,
Study Type
Randomized, double-blind, placebo-controlled
Purpose
To investigate the effects of Black Garlic in effects of an optimized aged garlic extract on cardiovascular disease risk factors in moderate hypercholesterolemic subjects: a randomized, crossover,
Dose
115 mg
Participants
Participants not specified
Duration
6 weeks
Results
G extract reduced diastolic blood pressure (DBP) (mean (95% CI) −5.85 (−10.5; −1.3) mm Hg) compared to the placebo, particularly in men with a DBP > 75 mm Hg. The consumption of an improved ABG extract with 1.25 mg of SAC decreased DBP, particularly in men with moderate hypercholesterolemia. The potential beneficial effects of ABG may contribute to obtaining an optimal DBP.
How They Measured It
See study for outcome measures
To investigate the effects of Black Garlic in antihypertensive effects of an optimized aged garlic extract in subjects with grade i hypertension and antihypertensive drug therapy: a randomized, tr
Study Type
Randomized, double-blind, placebo-controlled
Purpose
To investigate the effects of Black Garlic in antihypertensive effects of an optimized aged garlic extract in subjects with grade i hypertension and antihypertensive drug therapy: a randomized, tr
Dose
0.25 mg/day
Participants
Participants not specified
Duration
12 weeks
Results
acid levels (-0.3 mg/dL, -0.5 to -0.001 95% CI) and ACE activity (-9.3 U/L; -18.4 to -0.4 95% CI) were observed. No changes in endothelial function and inflammatory cytokines were observed. It was concluded that low-dose SAC supplementation in an optimized black-garlic extract allows for an extra-significant reduction in blood pressure in a Grade I hypertensive population receiving drug treatment.
How They Measured It
See study for outcome measures
Frequently Asked Questions
Common questions about Black Garlic research
There are currently 4 peer-reviewed studies on Black Garlic (Aged Black Garlic (Allium sativum)), involving 109 total participants. Research covers Cardiovascular & Antioxidant, Clinical trials. The overall evidence strength is rated as Strong.
The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (4 human studies), and reported outcomes.
Black Garlic has been researched for: Cardiovascular & Antioxidant, Clinical trials. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 4 out of 4 studies are human trials. Human trials carry more weight in our evidence scoring system.
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