Reviewed records available

Garlic

Allium sativum

Garlic can mean food, powder, aged extract, mouthwash, fresh topical use, or an isolated compound. Those are different exposures. The reviewed cards below cover aged-garlic preparations and garlic-based mouthwash without transferring those findings to ordinary food use, raw topical garlic, or systemic infection treatment.

Evidence snapshot reviewed October 16, 2026

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Botanical identity

Which plant this profile means

This profile is tied to Allium sativum. It does not cover other Allium species or every product sold as a garlic extract.

Scientific name
Allium sativum
WCVP taxon ID
296499
Atlas record
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Preparation boundaries

Same plant, different exposure

These forms stay separate in the evidence bank. A result for one cannot be copied onto the others.

Food or culinary use

bulb · Taken by mouth

Food exposure is not equivalent to a supplement, extract, mouthwash, or purified constituent.

Fresh topical use

fresh bulb · Applied to skin

Fresh raw topical garlic is a distinct exposure and must not inherit oral-supplement evidence.

Whole-plant powder

dried bulb · Taken by mouth

Powder cannot be assumed equivalent to aged extract or garlic oil.

Standardized extract

bulb · Taken by mouth

Only records explicitly studying aged garlic extract map here.

Other extract or formulation

garlic-derived formulation · Mouth rinse

Local oral-microbe findings do not establish a systemic antibiotic effect.

Purified compound

derived constituent · Route varies

Allicin or another isolated constituent is not whole garlic and needs its own identity and formulation data.

Research-bot status

Some evidence cards are public. The rest of the queue isn’t.

The reviewed cards below cleared a separate publication check. The remaining candidate extractions stay private until their source, wording, and preparation match are reviewed.

Sources in review
4
Possible claims found
7
Still awaiting review
6
Blocked source
1

Research connections

What this ingredient has been studied around

Blood pressure

A reviewed, preparation-specific evidence card is published for this source.

Blood lipids

A reviewed, preparation-specific evidence card is published for this source.

Oral health

A reviewed, preparation-specific evidence card is published for this source.

Reviewed evidence

2 source-linked records

Evidence synthesis Mixed or uncertain 19 trials; aggregate participant count not stated in the PubMed abstract

Aged-garlic trials show small, outcome-specific cardiometabolic signals

Across 19 trials of aged-garlic preparations, pooled results found small average reductions in systolic blood pressure and LDL cholesterol. The analysis did not find clear changes in diastolic pressure or HDL cholesterol, and the total-cholesterol result narrowly included no difference. The authors called for more high-quality trials. This is not evidence that eating garlic has the same effect or that an extract should replace prescribed care.

What was studied
Various aged-garlic preparations taken by mouth; not culinary garlic, raw topical garlic, garlic mouthwash, or an isolated compound
Setting
Mixed treatment settings
Why it ranks here
Pooling 19 trials is useful, but effects were small and inconsistent across outcomes, and several pooled estimates had moderate or high heterogeneity.
Limits and cautions
  • The PubMed abstract does not give the aggregate participant count, individual-trial quality details, adverse-event synthesis, or a preparation-by-preparation effect estimate.
  • The review combined various aged-garlic forms and populations; one extract, dose, or patient group cannot be assumed equivalent to another.
  • The pooled systolic-pressure and LDL changes were small on average, and the source does not establish their clinical importance for an individual person.
  • LDL heterogeneity was moderate, total-cholesterol heterogeneity was high, and several outcomes were null or borderline, so the findings are not a uniform cardiometabolic benefit.
  • A separate aged-garlic blood-pressure meta-analysis indexed under PMID 39437887 has been retracted and is excluded from this record.

This record is not a recommendation to use aged garlic for hypertension or dyslipidemia and does not support replacing prescribed blood-pressure or lipid treatment.

Evidence synthesis Mixed or uncertain 9 randomized trials; aggregate participant count not stated in the PubMed abstract

Garlic mouthwash evidence varies by comparator and follow-up time

Nine randomized trials tested garlic-based mouthwashes against dental-caries-related microorganisms. Compared with chlorhexidine, the pooled result favored garlic at one week, favored chlorhexidine at two weeks, and found no clear difference at one month. A two-week comparison favored garlic over sodium fluoride. The review rated the evidence low certainty, and heterogeneity was high for most chlorhexidine comparisons, so it does not establish a dependable long-term advantage.

What was studied
Garlic-based mouthwashes used locally in the mouth; not eaten garlic, an oral supplement, or a systemic antibiotic
Setting
Studied alone
Why it ranks here
Randomized trials and pooled analyses provide a human signal, but direction changed across follow-up times and comparators, certainty was low, and heterogeneity reached 73% to 96% in the chlorhexidine analyses.
Limits and cautions
  • The evidence concerns garlic-based mouthwash formulations and cannot be transferred to eating garlic, swallowing supplements, applying raw garlic, or treating a systemic infection.
  • The pooled direction changed at one week, two weeks, and one month relative to chlorhexidine; the one-month estimate included no difference.
  • The review rated the evidence low certainty, and heterogeneity was high in most chlorhexidine comparisons.
  • Microorganism counts are surrogate outcomes. The PubMed abstract does not establish fewer cavities, better long-term dental outcomes, or safety with continued use.
  • The accessible abstract does not provide the total participant count or enough formulation detail to establish that one retail garlic mouthwash matches the studied products.

This record does not establish garlic mouthwash as a replacement for dentist-recommended caries prevention, prescribed treatment, or a properly indicated antimicrobial product.

Profile sources

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