Can you take cold medication if you have high blood pressure?
Decongestants may aggravate your blood pressure and antihistamines may cause additive
drowsiness. Check with your doctor to make sure your blood pressure is controlled well enough
to take a decongestant like phenylephrine or pseudoephedrine for a few days until you are feeling better. A
product is available without a decongestant called Coricidin® HBP which controls pain and allergy symptoms. If you
decide to take an over-the-counter product, be sure to match your symptoms up to the product's
relief description. Antihistamines like chlorpheniramine or diphenhydramine make you feel drowsier while taking your blood
pressure medicine. You may feel drowsy or more tired when taking these drugs together. Do not
drive or operate machinery until you know how these drugs affect you.
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