Etova MR 400/4 combines Etodolac, a nonsteroidal anti-inflammatory drug (NSAID), and Thiocolchicoside, a muscle relaxant, to relieve pain and muscle stiffness. It is typically prescribed for conditions involving pain and muscle spasms.

You should take Etova MR 400/4 only for the duration your doctor prescribes, usually short-term, to minimize risks. Prolonged use can increase the chance of side effects such as stomach irritation, kidney issues, or cardiovascular problems from Etodolac, and potential muscle weakness or other effects from Thiocolchicoside.

Since your calf muscle pain occurs after smoking or physical exertion, it is important to identify the underlying cause, which could involve vascular or neurological issues. I strongly recommend consulting a doctor, such as a neurologist or vascular specialist, for a thorough evaluation before continuing this medication.

If you do use Etova MR 400/4 beyond a few days, regular follow-up is essential to monitor for side effects. Seek immediate medical attention if you experience severe stomach pain, blood in stools, swelling, chest pain, or worsening muscle weakness.

In addition to medication, consider lifestyle changes like quitting smoking and gradually increasing physical activity. Non-drug measures such as gentle stretching or physiotherapy may also help manage muscle pain.

Please consult your prescribing doctor or a specialist to ensure safe and effective treatment tailored to your specific condition.To narrow down potential causes, we will need some more information.I understand you're having calf pain after smoking or exertion and are wondering how long you can safely take Etova MR 400/4. To assist you better, could you please share your age and gender?