Garlic and blood pressure:
Garlic capsules may obtained in a 400 mg in oral capsule which may be taken 2 – 3 times daily or may be simply be added into food. Garlic was associated with blood pressure (BP) reductions only in patients with an elevated systolic blood pressure (SBP) and not in patients without elevated SBP in a review of 10 randomized controlled trials. In patients with elevated SBP, garlic reduced SBP by -16.3 mmHg and diastolic blood pressure (DBP) by -9.3mmHg in comparison with placebo. In participants without elevated SBP, there were no significant differences between garlic and placebo for SBP or DBP. (72)
Findings by Ried, K et al on garlic and hypertension: A meta-analysis that including 11 trials found that garlic supplements can significantly reduce blood pressure (BP) in people who have high BP. In most of the included studies, participants took garlic in powdered form, in doses ranging from 600 mg to 900 mg/day for 12 to 23 weeks. Results showed that garlic reduced systolic BP by an average of 4.6 mmHg. In people with high BP, the average reduction in BP was 8.4 mmHg systolic and 7.3 mmHg diastolic. The higher the person’s BP at the beginning of the study, the more their BP was reduced. (73)