Mexohar (mexiletine 50 mg) and Seloken XL (metoprolol succinate 25 mg) can be used together in selected patients with certain cardiac arrhythmias only when prescribed by a cardiologist, but this combination requires careful clinical assessment and monitoring because it can increase the risk of excessive slowing of heart rate, low blood pressure, dizziness, or conduction disturbances. The decision is strictly individualised based on ECG findings, underlying heart disease, pulse rate, blood pressure, and overall cardiac risk profile, and it must be used only under specialist supervision with appropriate follow up. It is not safe for self use, self initiation, or dose adjustment without medical guidance.

Mexohar 50 mg is not always a lifelong medicine, and the duration of treatment depends on why it has been prescribed and how your condition responds; in many cases, it is continued long term if needed for stable control of heart rate, blood pressure, or heart-related conditions, while in some patients it may be reduced or adjusted once stability is achieved. Still, this decision is highly individualised based on factors such as underlying disease, symptoms, heart function, and risk of recurrence, so you should not stop or continue it on your own; follow your cardiologist’s guidance for the safe duration and dose adjustments.