Related Experiment Video
Updated: Sep 27, 2026
Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells
Published on: October 26, 2009
Insights
Essential oil of garlic significantly inhibits platelet aggregation in vitro and in vivo. This suggests garlic's potential role in preventing thrombus formation by impacting platelet activity.
Area of Science:
- Cardiovascular Science
- Pharmacology
- Nutritional Science
Background:
- Platelet aggregation is a key process in thrombus (blood clot) formation.
- Garlic (Allium sativum) has been traditionally used for its health benefits, including cardiovascular effects.
Purpose of the Study:
- To investigate the in vitro and in vivo effects of garlic essential oil on platelet aggregation.
- To determine if garlic essential oil influences platelet response to common aggregating agents.
Main Methods:
- Platelet aggregation was measured using an aggregometer in 6 healthy adults.
- Blood samples were treated with garlic essential oil in vitro or subjects consumed garlic essential oil orally.
- Platelet aggregation was induced by adenosine diphosphate (ADP), epinephrine, and collagen.
Main Results:
- Garlic essential oil demonstrated a dose-dependent inhibition of platelet aggregation induced by ADP, epinephrine, and collagen in vitro.
- Oral administration of garlic essential oil also led to decreased platelet aggregation.
- These findings indicate a direct impact of garlic on platelet function.
Conclusions:
- Garlic essential oil possesses antiplatelet properties, inhibiting aggregation induced by various agents.
- Both in vitro and oral administration of garlic show potential in reducing platelet aggregation.
- Garlic may play a role in mitigating thrombus formation through its effects on platelet activity.
Abstract:
In 6 healthy adults the effect of essential oil of garlic on platelet aggregation was studied in vitro with an aggreganometer. The blood was collected in a siliconized centrifuge tube containing sodium citrate. The aggregating agents used were ADP, epinephrine and collagen. In each subject aggregation was studied 3 times: (i) initial fasting control; (ii) immediately after (i) but with essential oil of garlic drawn into the syringe together with the sodium citrate; (iii) 5 days after feeding 0.5 mg of essential oil of garlic daily. Addition of essential oil of garlic inhibited in-vitro platelet aggregation induced by ADP, epinephrine or collagen; the effect was dose-related. Oral administration of garlic also decreased platelet aggregation. Thus, garlic seems to inhibit some aspects of thrombus formation.
