My Transplant Doctor Offered to Sell Me His Own Blend of Finasteride and Vitamins

The doctor who did my hair transplant has offered to sell me his ownn blend of Finasteride. He says it is the same as propecia just less expensive. He claims it has 1.1 mg of finasteride plus some vitamins that allowed him to get FDA approval and not violate propecias patent

In some states, doctors can legally mix their medication ingredients. What he is doing sounds alright to me on the surface, but the issue of patent infringement may be more of a problem for the doctor if the 1mg dose of finasteride is used. This is more of a legal call than a medical one. His special blend is not FDA approved, although the finasteride itself is FDA approved to treat hair loss.