Side Effects
Nausea, dizziness, drowsiness, trouble sleeping, diarrhea, heartburn, runny nose, constipation, headache, or dry mouth may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor immediately if any of these unlikely but serious side effects occur: fainting, mental/mood changes (e.g., confusion, depression, hallucinations, memory problems), increased difficulty moving/walking, muscle cramps/spasm, restlessness, decreased sexual function. Some people taking pergolide have reported falling asleep suddenly during their usual daily activities (e.g., watching television, driving). In some cases, sleep occurred without any feelings of drowsiness beforehand. This sleep effect may occur any time during treatment with pergolide, including up to 1 year after starting the medication. Therefore, you should not drive or take part in other possibly dangerous activities until you are certain that this medication will not cause drowsiness or sudden sleep. If you experience increased sleepiness or fall asleep during the day, do not drive or take part in other possibly dangerous activities until you have discussed this effect with your doctor. Your risk is increased with use of alcohol or other medications that can make you drowsy. You may also develop a sudden drop in blood pressure, which can cause dizziness, nausea, sweating, and fainting. This is more likely when you are first starting the medication, when your dose is increased, or when you get up suddenly. To lower your risk, get up slowly from a sitting or lying position. In rare cases, this medication may cause very serious heart valve problems or swelling around the heart and lungs (e.g., pleural fibrosis/effusion, pericarditis). Tell your doctor immediately if you develop any of the following symptoms: difficult/painful breathing, chest pain, unusually slow/fast/irregular heartbeat, swelling of the ankles/feet, unusual weakness. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.