This medication is a selective alpha agonist, used to increase blood pressure and topically as a nasal decongestant. It is also used in the eye to dilate the pupil or to constrict superficial blood vessels in eye allergy. It works by reducing swelling of the blood vessels in the nasal passages.
Phenylephrine shrinks swollen nose tissue and opens up passages. It shrinks blood vessels to raise blood pressure. It helps some numbing drugs work longer.
It comes as a tablet, a liquid, or a dissolving strip to take by mouth. It is also comes as eye drops and nasal solution, instilled over affected area.
High blood pressure. Nervous and excitable. Dry mouth. Good mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help. See a dentist often. Not able to sleep.
Take a missed dose as soon as you think about it. If it is close to the time for your next dose, skip the missed dose and go back to your normal time. Many times this drug is taken on an as needed basis.
If you have an allergy to phenylephrine or any other part of this drug. If you have a sulfite allergy, talk with your doctor. Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs. If you have taken isocarboxazid, phenelzine, or tranylcypromine in the last 14 days. Monoamine oxidase inhibitors (eg, isocarboxazid, phenelzine, and tranylcypromine) must be stopped 14 days before this drug is started. Taking both at the same time could cause risky high blood pressure.
If you think there was an overdose, call your local poison control center or ER right away. Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue or gray skin color; seizures; or swelling of face, lips, tongue, or throat. Chest pain or pressure, a fast heartbeat, or passing out. Very bad headache. Any rash. Side effect or health problem is not better or you are feeling worse.
Category C : Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Nasal Decongestants & Other Nasal Preparations, Mydriatic Drugs
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