My brother is suffering due to the shortage of dopamine hormone. he is in treatment for the previous 35 days.sir, how much time will take to cure this?

Depends on diagnosis: Dopamine is often given to patients who have low Dopamine in their brain, and who may have parkinson's disease. It depends where your brother is on the spectrum of the diagnosis that his neurologist or physician has determined. The effects of taking the Dopamine should occur fairly soon. So if he is benefiting from it, you should already see this by now. If not, have him consult with his neurologist to find out what prognosis is.