Beta blockers are first-line treatment for cardiovascular disorders. This prescription medicine is used for the treatment and management of tremor, anxiety, migraine, hyperthyroidism, glaucoma and CVD that mainly includes hypertension, angina pectoris, atrial fibrillation and cardiac arrest. It also prevents conditions like stroke. The side effects of Metaprolol Succinate Oral include bradycardia i.e. very slow heart beats, shortness of breath, edema, light headedness, weight gain, diarrhea, fatigue, confusion, trouble sleeping, and trouble with memory. Beta blockers are atenolol, metoprolol, and propranolol.