oral decongestants

Oral decongestants are medications taken by mouth to relieve nasal congestion caused by colds, allergies, or sinus infections. They work by constricting blood vessels in the nasal passages, which reduces swelling and clears blocked airways. Common active ingredients include pseudoephedrine and phenylephrine. While effective at easing nasal stuffiness, they can sometimes cause side effects like increased heart rate, higher blood pressure, or insomnia. It's important to follow dosing instructions and consult a healthcare professional if you have underlying health conditions or are taking other medications.