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Garlic Extract — timing, dose & interactions

In a meta-analysis of randomized trials, garlic supplements lowered blood pressure by about 9/6 mmHg in people with hypertension, and taken for over 2 months they modestly lowered cholesterol in people with mildly high levels. Supplements may increase the risk of bleeding.

Also known as: Aged garlic extract, Allicin

Timing

When to take it

Take with a meal to reduce stomach upset and garlic breath.

Interactions

Garlic Extract with other supplements

No documented supplement interactions in our dataset.

Safety

Medications & health conditions

CautionWarfarin

Garlic supplements may increase bleeding risk. NIH notes that garlic supplements may increase the risk of bleeding, especially with anticoagulants or aspirin. Tell your prescriber.

Human data
CautionOther blood thinners

Garlic supplements may increase bleeding risk. NIH notes that garlic supplements may increase the risk of bleeding, especially with anticoagulants or aspirin. Tell your prescriber.

Human data
CautionSurgery in the next 2 weeks

Tell your surgeon about garlic supplements. They may increase bleeding. NIH says telling your health care providers is especially important if you're having surgery.

Human data
NoteBlood pressure medication

Garlic can lower blood pressure. In people with hypertension it lowered blood pressure by about 9/6 mmHg in a meta-analysis. Monitor your readings.

Strong evidence
CautionPregnant or breastfeeding

Garlic supplements: food amounts only in pregnancy. NIH says garlic may not be safe during pregnancy or breastfeeding in amounts greater than those in food.

Mechanism-based

Buying guide

What to look for on the label

  • Garlic Extract

    • Aged garlic extract (most studied for blood pressure)
    • Allicin-standardized garlic powder

FAQ

Common questions

When is the best time to take Garlic Extract?

Breakfast / Lunch / Dinner. Take with a meal to reduce stomach upset and garlic breath.

Should Garlic Extract be taken with food?

Yes. Taking it with a meal reduces stomach upset.

Sources

References

  1. 01NIH NCCIH — Garlic
  2. 02Ried K. Garlic lowers blood pressure in hypertensive individuals, regulates serum cholesterol, and stimulates immunity: an updated meta-analysis and review. J Nutr 2016.
Last reviewed Sourced from NIH fact sheets and peer-reviewed studies.How we make this contentReport an error