You should not use Alphagan P if you are allergic to brimonidine, tell your doctor about all allergies before proceeding.
Tell your doctor if you have ever had:
heart problems, circulation problems;
coronary artery disease (clogged arteries);
low blood pressure;
depression; or
Raynaud's syndrome, Buerger disease.
Tell your doctor if you are pregnant, plan on becoming pregnant or currently breast-feeding.
Children may be more prone to side effects of this medication.