There is nothing wrong in the treatment suggested by your dermatologist
. The medicines prescribed are completely safe to use and the side effects mentioned in blogs or articles rarely occur. If in case there is a side effect, it is completely reversible with discontinuation of the drug. As you have mentioned, you are having good result with your treatment, kindly trust your doctor and continue with his treatment as long as he advises. Once you have a good hair growth, mesotherapy can be stopped however you might need to continue with oral and topical medicines for a longer period of time. Take care.