Medicine Name: Vinicor-D 25 Tablet ER. Composition: Metoprolol Succinate (25mg) + Chlorthalidone (6.25mg). Side Effects: Nausea Constipation Diarrhea Fatigue Headache Dizziness Slow heart rate Increased blood uric acid Decreased potassium level in blood Glucose intolerance Altered blood lipid level Cold extremities Decreased magnesium level in blood Increased calcium level in blood.