All medicines may cause side effects, but many people have no, or minor, side effects.
Check with your doctor if any of these most common side effects persist or become bothersome:
Blurred vision; constipation; decreased appetite; dizziness; drowsiness; dry mouth; general body discomfort; headache; incoordination; light-headedness; muscle aches/pains; nausea; nervousness; sleeplessness; stomach pain; stuffy nose; swelling of the skin; tiredness; tremors.
Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blood in urine; chest pain; fainting; hallucinations; irregular heartbeat; light-headedness when rising from a lying or seated position; prolonged, inappropriate, or painful erections; seizures; shortness of breath; stroke; vomiting.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.