common garlic

Reported Doses

Safety/efficacy may not be established; reported doses may be derived from limited or potentially inadequate studies with variable regimens, multi-ingredient products, or where concentration of active ingredients may vary widely

Special Note

[formulation clarification]

Info: active constituents may include allicin, ajoene, other organosulfur compounds

Effectiveness Ratings

[see Herb & Supplement Effectiveness Rating Definitions table]

alopecia areata

[Insufficient Evidence]

Dose: apply 5% gel topically qid; Info: used with topical corticosteroid

angina, unstable

[Insufficient Evidence]

Dose: 60 mg IV qd

atherosclerosis

[Possibly Effective]

Dose: 900 mg/day garlic powder PO divided qd-tid; Alt: 300 mg garlic powder PO x1; 150 mg garlic powder PO bid; 250 mg aged garlic extract PO qd; 1200 mg aged garlic extract PO qd-bid

athletic performance

[Insufficient Evidence]

Dose: 900 mg PO x1 before exercise

BPH

[Insufficient Evidence]

Dose: 1 mg/kg/dose garlic extract PO qd

cancer prevention, colorectal

[Insufficient Evidence]

Dose: 2.4 mL aged garlic extract PO qd

candidiasis, oropharyngeal

[Insufficient Evidence]

Dose: apply paste topically qid

candidiasis, vulvovaginal

[Insufficient Evidence]

Dose: apply cream PV qhs

cardiovascular disease

[Insufficient Evidence]

Dose: 250 mg aged black garlic extract PO qd

common cold prevention

[Insufficient Evidence]

Dose: 180 mg allicin PO qd; Alt: 14 mg garlic powder PO qd

corns

[Insufficient Evidence]

Dose: apply liquid extract topically bid

coronary heart disease

[Insufficient Evidence]

Dose: 800-2000 mg PO qd

COVID-19

[Insufficient Evidence]

Dose: 50 mg garlic oil PO bid x10 days; Info: used with standard tx

denture stomatitis

[Insufficient Evidence]

Dose: 40 mg/mL mouthwash swish/spit tid

diabetes mellitus

[Possibly Effective]

Dose: 600-1500 mg/day garlic powder PO divided bid-tid; Alt: 8.2 mg garlic oil PO qd; 1000 mg aged garlic extract PO qd; Info: used with or without metformin

diabetic retinopathy

[Insufficient Evidence]

Dose: 1 g garlic powder PO qd

endometriosis

[Possibly Effective]

Dose: 400 mg garlic powder PO qd; Info: used with standard tx

erectile dysfunction

[Insufficient Evidence]

Dose: 5 g/150 mL garlic juice PO bid; Info: used with tadalafil

exercise-induced muscle soreness

[Insufficient Evidence]

Dose: 80 mg allicin PO qd

fibrocystic breast disease

[Insufficient Evidence]

Dose: 150 mg garlic powder PO bid

gastritis

[Insufficient Evidence]

Dose: 150 mg garlic powder PO bid

hepatitis

[Insufficient Evidence]

Dose: 150-300 mg garlic oil PO qd

hepatopulmonary syndrome

[Insufficient Evidence]

Dose: 1-2 g/m^2/day garlic oil PO divided bid

HTN

[Possibly Effective]

Dose: 300-1500 mg/day garlic powder PO divided qd-tid; Alt: 2400 mg garlic powder PO x1; 500 mg garlic oil PO qd; 960-7200 mg/day aged garlic extract PO divided qd-tid

hyperlipidemia

[Possibly Effective]

Dose: 600-7200 mg/day aged garlic extract or garlic powder PO divided bid-tid; Alt: 300 mg garlic powder PO bid; 1200 mg PO qd; 250 mg aged garlic extract PO qd; 500 mg garlic oil PO qd

influenza

[Insufficient Evidence]

Dose: 14 mg garlic powder PO qd

lead toxicity

[Insufficient Evidence]

Dose: 400 mg garlic powder PO tid

metabolic dysfunction-associated steatotic liver disease

[Possibly Effective]

Dose: 800-1600 mg garlic powder PO qd; Alt: 400-800 mg garlic powder PO bid

metabolic syndrome

[Insufficient Evidence]

Dose: 5000-20,000 mg raw garlic PO qd; Alt: 240-6000 mg aged garlic extract PO qd; 188-6000 mg garlic powder PO qd; 2.34 mg ajoene PO qd

obesity

[Insufficient Evidence]

Dose: 1600 mg garlic powder PO qd

osteoarthritis

[Insufficient Evidence]

Dose: 500 mg PO bid

periodontitis

[Possibly Effective]

Dose: 1200 mg aged garlic extract PO bid

peripheral arterial disease

[Insufficient Evidence]

Dose: 400 mg PO bid

polycystic ovary syndrome

[Insufficient Evidence]

Dose: 800 mg PO qd; Alt: 500 mg PO bid

premenstrual syndrome

[Insufficient Evidence]

Dose: 400 mg dried garlic powder PO qd

prostate CA

[Insufficient Evidence]

Dose: 1 mg/kg/dose garlic extract PO qd

rheumatoid arthritis

[Insufficient Evidence]

Dose: 500 mg dried garlic PO bid

tick repellent

[Insufficient Evidence]

Dose: 1200 mg PO qd

tinea corporis

[Insufficient Evidence]

Dose: apply 0.6% ajoene gel topically bid

tinea cruris

[Insufficient Evidence]

Dose: apply 0.6% ajoene gel topically bid

tinea pedis

[Insufficient Evidence]

Dose: apply 0.4-1% ajoene gel topically bid

warts

[Insufficient Evidence]

Dose: apply liquid extract topically bid

wound healing

[Insufficient Evidence]

Dose: apply 30% ointment topically bid