Hello. First, please verify your dosage with your physician, as 25 mg is unusually high; standard doses are typically 0.25 mg to 0.5 mg. Common side effects of Cabergoline include nausea, headache, dizziness, fatigue, drowsiness, and constipation. Less common but serious side effects include heart valve issues (associated with high doses), shortness of breath, persistent cough, swelling in the ankles or feet, and behavioral changes like compulsive urges or mood swings. Please discuss your exact dosage and any symptoms you experience with your healthcare provider.