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The One Supplement That Doctors Say May Be Useless And Unsafe For Heart Health: St. John’s Wort

January 6, 2025 by Marissa Matozzo

 
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Many people use supplements to improve their health and address nutritional gaps, but not all supplements are as beneficial as they seem. Sometimes, especially when taken in large doses or without proper guidance, these supplements can cause harmful side effects. For example, some supplements might unintentionally increase blood pressure and raise the risk of heart problems.

We spoke with Dr. Kubanych Takyrbashev, MD and health and wellness advisor, who highlighted a supplement to avoid if you want to prevent high blood pressure and cardiovascular issues. He mentioned that St. John’s wort should be avoided. Keep reading to find out why.

Drawbacks Of St. John's Wort Supplements For Those With High Blood Pressure

Hypericum perforatum, widely referred to as St. John's wort, belongs to the Hypericaceae family. This perennial species can reach a height of up to one meter. It features numerous yellow blossoms adorned with prominent black glands along their borders, elongated stamens, and three pistils. St. John’s Wort, often taken for its possible antidepressant benefits, can interfere with several medications, particularly those prescribed for blood pressure and heart-related issues.  

According to Takyrbashev, this can render it ineffective and potentially hazardous for individuals with hypertension. The doctor says that this supplement "can interact with medications that are metabolized by the liver, potentially reducing their effectiveness." In addition,  Takyrbashev notes that "this interaction can sometimes lead to elevated blood pressure due to changes in how these medications regulate blood pressure."  

Ultimately, while supplements like St. John's wort seem beneficial at first glance, they can pose significant health risks if not used correctly. Always prioritize a balanced diet and healthy lifestyle, and seek professional medical advice before incorporating any new supplement into your routine.

The Bottom Line

Remember, supplements can be a valuable addition to your health regimen, but they are not a one-size-fits-all solution. By staying informed and consulting with your doctor, you can make safe and effective choices that support your long-term health and well-being.

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