Re: Are there any allergy/sinus medications that raise your blood pressure?
Actually, many of them do. All decongestants raise blood pressure. They are vasoconstrictors - which means they work by constricting vessels. Most decongestants contain hypertension warnings. Antihistimines are more debatable. While safe for most, they can raise BP. Histamines relax vessels, and these medications have the opposite effect. Allergy medications seem to effect people in different ways, so no general rule applies. When in doubt, read the labels carefully, do some research, and get a decent home BP unit to keep an eye on things.