TCM herb has been traditionally used to treat high blood pressure

1. Garlic - Garlic contains allicin, a substance which has antibacterial, antioxidant, lipid lowering and anti-hypertension properties. In a pilot study made at Clinical Research Center of New Orleans on whether garlic could lower blood pressure, nine patients with severe hypertension were given a garlic preparation containing 1.3 % allicin. Sitting blood pressure fell with a significant decrease in diastolic blood pressure only five to 14 hours after the dose. Moreover, it was proven in a 2009 study that fresh garlic has more potent cardio-protective properties than processed garlic.

2. Cinnamon - Cinnamon not only prevents heart disease, it can also prevent diabetes. The Center for Applied Health Sciences in Ohio conducted a study of 22 subjects, half of which were given a 250mg of water soluble cinnamon daily while the other half were given placebo. It was discovered that those who drank cinnamon had a 13 to 23 percent increase in antioxidants connected with lowering blood sugar levels.

3. Onions - Onions contain quercetin, an antioxidant flavonol found to prevent heart disease and stroke. In a research study published in the Journal of Nutrition, subjects with hypertension experienced a decrease in their blood pressure by 7mmHg systolic and 5 mmHg diastolic as opposed to those who were taking placebo.

4. Olives - This herb is a significant part of the Mediterranean diet, recognized to be one of the healthiest in the world. Oil made from olives has been found to reduce blood pressure. In a study conducted on the importance of olive oil, Dr. L. Aldo Ferrara, Associate Professor at the Frederico II University of Naples in Italy discovered that the daily use of 40 grams of olive oil reduced the dosage of blood pressure medication in hypertensive patients by about 50 percent. Polyphenols in extra-virgin olive oil was credited for the significant reduction of blood pressure.

5. Oregano - This herb contains the compound carvacrol which has been proven to be effective against blood pressure. In a study conducted on animal subjects, by researchers from Eskisehir Osmangazi University in Turkey, carvacrol was found to reduce heart rate, mean arterial pressure as well as the systolic and diastolic blood pressures.

6. Hawthorn - This herb has been traditionally used to treat high blood pressure. In one study conducted in Reading, UK, 79 type-2 diabetic patients were randomized to receive 1200 mg of hawthorn extract while another group received medication for high blood pressure. Results revealed that patients taking hawthorn by the end of the 16th week showed a reduction in their mean diastolic pressure.