<s>[INST] Hi , I have been diagnosed with ventricular tachycardia and hypertrophied cardiomyopathy. I have been taking prolomet xl 50mg. This has given me lightheadedness and ysterday while talking a walk i was feeling a little dizzy. Is this because of the medication or is my condition worsening? [/INST] I would still put is at transient arrhythmia because of Hypertrophic cardiomyopathy.  I would strongly recommend you to get a 24 hour holter,  may keep it for a 2 days,  and based on that report titrate the dose of prolomet.  Regards Dr Priyank Mody,  Cardiologist.  Mumbai </s>