Can You Take Caffeine and Garlic Extract Together?

Dose or timing may matter

The short answer

Caffeine raises blood pressure via sympathetic nervous system stimulation while garlic extract lowers it via allicin-mediated vasodilation. These opposing effects may cancel each other's BP effects.

How to arrange timing

If taking garlic for blood pressure support, consider limiting caffeine intake or separating doses by several hours.

Reference

Reference noted for this combination: Ried K et al. Effect of garlic on blood pressure: a systematic review and meta-analysis. BMC Cardiovasc Disord. 2008;8:13

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.