I had a bad first reaction to Fosamax too. But it got better. I was so afraid of the newer drugs. I endured only because I had too due to my insurance.Insurance said I had to try a bisphosphonate BEFORE they would allow me to take Tymlos or Forteo!A bone builder. After talking to Mccormick, and educating myself on the class of bone meds. I stopped taking it after 4, 6,months. I filled the prescription. But did not take it because I knew I was going to eventually take Forteo, or Tymlos. I felt comfortable knowing g Fosamax that I did take stopped my bone loss.(ctx test after 3 month) And a drug holiday was recommended before starting a new class of bone builders. I would not try the Prolia personly as stated above. Please note this is my personal journey. My overall health is good. My priorities were growing good bone so I could have back surgery . I Don't mean to tell you to stop taking your meds, just find a path that is good for you and fight for it.
Many Blessings.