Will taking protein affect my hair transplant 2 months post-op?

There should be no reason why you can't have protein in your diet.  If you are concerned always check with your doctor.

You can definitely take your protein now, although, I would always suggest checking in with your doctor.

Great question.  I refer all of my patients to this resource.   Real self charges doctors to pay an additional fee to ad a hyperlink, but the resource can be found at helphair.com.  There is great evidence that some androgen building supplements can worsen hair loss.  Dr. Shapiro's help hair shake is a whey protein shake designed to circumvent this problem.  Good luck building your muscles and growing your hair!!