Harvard Health Tips

Pseudoephedrine and blood pressure

A medication called pseudoephedrine, found in many over-the-counter cough and cold remedies, constricts blood vessels in the nose and sinuses, which decreases swelling and drains fluids. Unfortunately, the drug doesn't affect only the head it tightens blood vessels throughout the body, which can sometimes increase blood pressure. If you have high blood pressure or heart disease, don't take medications that contain pseudoephedrine. …

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