I tried Fosamax and was immobilized with muscle and joint pain for a week with the first dose. I was told symptoms would lessen with time so I tried a second dose the next week with the same painful results. After that I was not willing take another dose. Some people are able to tolerate the bisphosphonates and some are not.

Six months later I had a break in my leg bone just above the knee while walking. At that time I decided I needed to take something for the osteoporosis and was started on Evenity. At the end of one year on Evenity my DEXA scores moved from osteoporosis back into osteopenia. I had minimal side effects while on Evenity.

I strongly urge everyone to research all the alternative drugs for osteoporosis so you are making an informed decision. Here is one of many good articles on different drugs used for treating osteoporosis. This one is from Harvard Medical School:
https://www.health.harvard.edu/womens-health/osteoporosis-drugs-which-one-is-right-for-you
Wishing you the best.