<s>[INST] I am on lisinopryl for high blood pressure  now for a year. my bp raises when i am under stress. for two years i have had a very stressful life, job, etc. i have read that raw garlic helps bp. what are your thoughts. is the capsule form as beneficial? [/INST] Garlic has been said to decrease blood pressure,  it's one of the food fad.  Most of the big studies to prove it's effect have found it to be clinically u non significant,  even the smaller trial garlic supplement could decrease the upper systolic Max to 3-4 mm hg and lower diastolic to 2-3 mm hg.  So don't stop lisinopril and shift to garlic,  you may take it as supplement as there is no harm but as a qualified doctor I cannot recommend the same.  Regards Dr Priyank Mody </s>