Can You Take Fish Oil (Omega-3) and Magnesium Together?

Dose or timing may matter

The short answer

Fish oil (omega-3) and magnesium both independently lower blood pressure. Combining high doses may produce additive hypotensive effects.

How to arrange timing

Generally safe at standard doses. Monitor blood pressure if using therapeutic doses for hypertension management.

Reference

Reference noted for this combination: Houston M. The role of nutraceutical supplements in the treatment of hypertension. J Clin Hypertens. 2012;14(2):121-132

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.