Forteo and Tymlos are not exactly the same but both work in very similar ways using the parathyroid pathway. Depending on how you tolerate these meds, they are essentially interchangeable at least in terms of how they were offered to me. Since I am sensitive to meds the adjustable dose of Tymlos was key for me.

I did Tymlos so that I could follow with Evenity but have found out my doc isn't comfortable with that. Evenity is both a bone builder and an anti-resorptive so pretty potent and I might have chosen that instead had I known my doc wouldn't prescribe after Tymlos. I am seeking a second opinion and meeting with Keith McCormick as well (got his new book).