Yes, she should continue taking Metocard XL 50 as prescribed. It is a beta-blocker essential for hypertrophic cardiomyopathy; it slows the heart rate, allowing the heart to fill more efficiently and reducing symptoms like chest pain and breathlessness. Suddenly stopping this medication can be dangerous and worsen her condition. Common side effects include fatigue, dizziness, a slow heart rate, cold hands or feet, and sleep disturbances. If she experiences severe dizziness, fainting, or worsening shortness of breath, contact her cardiologist immediately. Do not alter the dose without consulting her doctor.