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Supplements for Blood Pressure

Although supplements can help reduce blood pressure readings, potassium and magnesium may interact with losartan and similar drugs in a dangerous manner.

Many people would prefer to use natural approaches to managing blood pressure, but mixing certain supplements for blood pressure with anti-hypertensive drugs can be risky. Make sure to check out such combinations before starting to take them.

Q. I am 68 years old and take losartan and amlodipine for high blood pressure. I have started taking a potassium supplement with my doctor’s reluctant approval. I’ve also added magnesium citrate to my regimen.

My blood pressure has come down. Would it be safe to gradually reduce the blood pressure medication under my doctor’s supervision? Are there other things I should be doing?

Safety of Supplements for Blood Pressure Control

A. We are concerned about your supplements. Although potassium and magnesium may be helpful in lowering blood pressure, they may each interact with losartan.

Potassium could build up to dangerous levels. Magnesium levels should be monitored, as they could build up and put the kidneys at risk.

Other Options for Lowering Blood Pressure Naturally

There are many other ways to get your blood pressure down, including a DASH diet (Dietary Approaches to Stop Hypertension), beets, chocolate or pomegranate juice (Nutrients, Apr. 14, 2015; Nutrition Journal, March 4, 2014).

You will find many more details in our Guide to Blood Pressure Treatment. Once you and your doctor have decided upon a safe regimen, it should be feasible to reduce your medication bit by bit. This must, of course, be done with your doctor’s input and supervision.

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.”.
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