A 58-year-old male presents with palpitations and hand tremors for 3 years, worsening over the past month. Physical exam: HR 110 bpm, BP 160/60 mmHg, weight loss, moist skin, palpable thyroid gland with vascular bruit, no jugular venous distension, normal cardiac size, irregularly irregular heart rate of 134 bpm with varying heart sound intensity, clear lungs and abdomen, no lower limb edema. What should be given for complications?