Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.
The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
- dizziness
- flushing
- headache
- stuffy nose
Although most of the side effects listed below don’t happen very often, they could lead to serious problems if you do not check with your doctor or seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
- dizziness, if severe
- redness, burning, or swelling of the eye
- stomach discomfort following meals
- vision changes, including blurred vision, seeing shades of colours differently than before, sensitivity to light, temporary or partial vision loss, or double vision
Stop taking the medication and seek immediate medical attention if any of the following occur:
- chest pains, an irregular heartbeat, or shortness of breath when starting or following sexual activity (if you have a heart condition)
- prolonged (longer than 4 hours), painful, or inappropriate erection of penis
- seizures
- signs of a severe skin reaction such as blistering, peeling, a rash covering a large area of the body, a rash that spreads quickly, or a rash combined with fever or discomfort
- you have an allergic reaction (e.g., rash; itching; shortness of breath; swollen face, lips, or throat)
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.
