Generic name: Brimonidine tartrateBrand names: Alphagan P
Alphagan P lowers high pressure in the eye, a problem typically caused by the condition known as open-angle glaucoma. Alphagan P works in two ways: it reduces production of the liquid that fills the eyeball, and it promotes drainage of this liquid. This drug is free of the preservative benzalkonium chloride.
Alphagan P may have a slight effect on blood pressure. If you have severe heart disease, make sure the doctor is aware of it. Caution is warranted.
Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe to continue using Alphagan P.
You'll need to avoid Alphagan P if it gives you an allergic reaction, or if you're taking a medication classified as an MAO inhibitor, such as the antidepressants Nardil and Parnate.
Use Alphagan P with caution if you have circulation problems, low blood pressure, or depression. Caution is also warranted if you have liver or kidney problems, since the effects of Alphagan P under these conditions have not been studied.
The effect of Alphagan P may diminish over time. The doctor should check your eye pressure periodically.
Alphagan P makes some people drowsy. Do not engage in hazardous activities such as driving until you know how Alphagan P affects you.
Alphagan P has not been studied in children under 2 years of age.
If Alphagan P is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Alphagan P with the following:Barbiturates such as phenobarbital and secobarbitalOther sleep medications such as Zaleplon and zolpidem tartrateNarcotic painkillers such as acetaminophen, hydrocodone bitartrate, napsylate, oxycodone, and propoxypheneAlcoholDrugs classified as beta blockers, such as the high blood pressure medications acebutolol hydrochloride, atenolol, and propranolol hydrochlorideOther high blood pressure drugsHeart drugs such as digoxin, glyceryl trinitrate, and isosorbide dinitrateTricyclic antidepressant drugs such as doxepin hydrochloride, protriptyline hydrochloride, and trimipramine maleate
Although there is no evidence that Alphagan P can cause harm, the effects of the drug during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, inform your doctor immediately.
It is not known whether Alphagan P appears in breast milk. If you are nursing, its use is not recommended.
The usual dose is 1 drop in the affected eye(s) 3 times daily, approximately 8 hours apart.
No information is available on Alphagan P overdose. However, any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.