Alphagan P Side Effects
Generic name: brimonidine ophthalmic
Note: This document contains side effect information about brimonidine ophthalmic. Some of the dosage forms listed on this page may not apply to the brand name Alphagan P.
Some side effects of Alphagan P may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to brimonidine ophthalmic: ophthalmic solution
Along with its needed effects, brimonidine ophthalmic (the active ingredient contained in Alphagan P) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking brimonidine ophthalmic:More common
- Blurred or loss of vision
- burning, dry, or itching eyes
- discharge or excessive tearing
- disturbed color perception
- double vision
- halos around lights
- itching of the eye
- night blindness
- overbright appearance of lights
- redness of the eye or inner lining of the eyelid
- swelling of the eyelid
- tearing of the eye
- tunnel vision
- Ache or pain in the eye
- bloody eye
- blurred vision or other change in vision
- change in color vision
- decreased vision
- difficult or labored breathing
- difficulty seeing at night
- dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
- drainage from the eye
- fast heartbeat
- feeling of something in the eye
- gradual blurring or loss of vision
- increased blood pressure
- increased sensitivity of the eye to light
- mental depression
- muscle pain
- nausea or vomiting
- oozing in the eye
- redness, swelling, or itching of the eye or eyelid
- runny or stuffy nose
- seeing flashes or sparks of light
- seeing floating dark spots or material before eyes
- seeing floating spots before the eyes or a veil or curtain appearing across part of vision
- shortness of breath
- skin rash
- swelling of the eye
- tightness in the chest
- unusual tiredness or weakness
- watery eyes
- Bluish lips or skin
- chest pain or discomfort
- fast, pounding, or irregular heartbeat or pulse
- feeling of warmth or heat
- flushing or redness of the skin, especially on the face and neck
- irregular, fast, slow, or shallow breathing
- low body temperature
- muscle aches or weakness
- slow or irregular heartbeat
- weak or feeble pulse
- weight gain
Some side effects of brimonidine ophthalmic may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:More common
- Burning, stinging, or tearing of the eye
- drowsiness or tiredness
- dryness of the mouth
- Acid or sour stomach
- bad, unusual, or unpleasant (after) taste
- body aches or pain
- change in taste
- cough producing mucus
- crusting on eyelid or corner of eye
- difficulty breathing
- discoloration of white part of the eye
- dryness of the eye
- dryness or soreness of the throat
- general feeling of discomfort or illness
- joint pain
- lack or loss of strength
- large amounts of cholesterol in the blood
- lid disorder
- loss of appetite
- muscle aches and pains
- pain or tenderness around the eyes and cheekbones
- paleness of the eye or inner lining of the eyelid
- passing of gas
- pounding heartbeat
- sleepiness or unusual drowsiness
- sore throat
- stomach discomfort, fullness, upset, or pain
- tender, swollen glands in the neck
- trouble with sleeping
- trouble with swallowing
- troubled breathing
- unable to sleep
- voice changes
- Constricted, pinpoint, or small pupils (black part of the eye)
- redness of the skin
- sensitivity to light
- throbbing pain
- unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
- unusual weak feeling
- unusually warm skin
For Healthcare Professionals
Applies to brimonidine ophthalmic: ophthalmic solution, topical gel
Ocular side effects reported in 10% to 30% of patients have included ocular hyperemia, burning and stinging, blurring, foreign body sensation, conjunctival follicles, ocular allergic reactions and pruritus. Those reported in 3% to 9% of patients have included corneal staining/erosion, photophobia, eyelid erythema, ocular ache/pain, ocular dryness, tearing, eyelid edema, blepharitis, ocular irritation, conjunctival blanching, and abnormal vision. Lid crusting, uveitis, conjunctival hemorrhage, and conjunctival discharge have been reported in less than 3%. Brimonidine has been associated with elevated intraocular pressure (32 to 34 mmHg) in conjunction with a local allergic reaction.
Anterior uveitis has been reported in at least 4 patients after 11 to 15 months of brimonidine treatment. Causality was confirmed by rechallenge.
There are no data on cases of uveitis involving brimonidine ophthalmic products with Purite as a preservative. Rather, case reports involve brimonidine products incorporating benzalkonium chloride as a preservative.
Gastrointestinal side effects have most frequently included oral dryness (10% to 30%). Other gastrointestinal side effects are uncommon.
Nervous system side effects including fatigue/drowsiness and headache have occurred in 10% to 30% of patients. Other central nervous system side effects including dizziness have occurred in 3% to 9% of patients. Anxiety and insomnia have occurred in less than 3% of patients. Somnolence has been reported in infants.
A study in young healthy adult males reported no change in pulmonary function after a single ophthalmic dose of 0.2% brimonidine.
Upper respiratory symptoms were reported in 3% to 9% of patients receiving brimonidine ophthalmic. Nasal dryness was reported in less than 3% of patients.
One study in young healthy adult men reported small decreases in systolic blood pressure during recovery from exercise and four hours after administration of a single ophthalmic dose of 0.2% brimonidine. The changes did not produce clinically significant effects in the population studied.
Cardiovascular side effects have included asthenia in 3% to 9% of patients. Other cardiovascular side effects such as hypertension, palpitations and syncope have occurred in less than 3% of patients.
Psychiatric side effects including depression and anxiety have been reported in less than 3% of patients.
Musculoskeletal side effects including muscular pain have been reported in 3% to 9% of patients.
Hypersensitivity reactions including sore red eyes, follicular reaction, conjunctival and episcleral injection, have rarely been reported.
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