My husband, 56 years old, has hypertension and is taking metoprolol 100mg. ECG report says Normal sinus rhythm, Non specific ST-T wave changes. Blood chem result - uric acid 453, triglycerides 3.68, total cholesterol 5.89, LDL 3.20, VLDL 1.67, HDL ratio 5.8. FBS, BUN, Crea, HDL, SGPT are all within normal range. Prior to ECG & lab tests, he took isordil 5mg (1 tab, 4times this week) when his BP rose high at 160-180 over 80-90. He is complaining of dizziness and lightheadedness. Please advise. Thank you