Is garlic good for high blood pressure?

Yes, but...: The effect on systolic BP (top number), is modest, and more thn on the diastolic (bottom number). The effective dose may be higher than many people may want: equivalent to 4 cloves of raw garlic daily. Unknown if cooked or crushed/minced.Etc has same effect. Heating and releasing the sulfurous compounds (odor causing) affect the med effect. This dose can cause gas, upset stomach, social probs.

No evidence: There is no evidence that garlic lowers blood pressure. It tastes great, but probably won't help your blood pressure.

Garlic: Per http://www.Mayoclinic.Org/medical-edge-newspaper-2010/mar-12b.Html , there is evidence that garlic may lower lipid levels, “relax smooth muscles ; dilate blood vessels”. 1 study showed that intake of 200 to 400 mg of garlic extract 3 x/day “can lower blood pressure modestly.”.