I took 2 doses of Finax 1mg accidentally. One at morning and other at night. Will this cause any problem for me?

Hi thereTaking by accident double dose of finasteride should not be an issue I would let your doctor know if you have not told him yet.

An extra 1 mg Finasteride taken once will not have any appreciable impact. A different question is whether you should take Finasteride at all. It does have severe sexual side effects in a few percent of patients but taking even that small risk may be a bad bet. This would not be my first choice in a pharmacological approach. I would prefer Minoxidil, LLLT and PRP as alternatives. 

Taking 2 mg in a 24 hour period for a single time will not cause any additional issues over taking just 1 mg. However, whenever a patient uses a dose that was not intended, the prescribing physician should be notified.