I would suggest to get your free testosterone level
done as well as fasting blood sugar. If your testosterone is less, megalis alone may not help you. Generally the side effect profile has headache on the list but yes, body aches may persist. I would advice to try 5 mg but don't take wine or alcoholic drink along side. Starting with a low dose may help you to tide over the side effect in some time.
Dr Saatiish Jhuntrraa