@laren3, hi.
Forteo and Tymlos work with the mechanism our bodies normally use to maintain healthy bone. They increase the activity of cells that carry away damaged bone and increase the cells that replace the damaged bone with healthy bone. They are called anabolic because they build bone. Many endocrinologists are now understanding that it is better to build a healthy skeleton than to delay its decline.
Bisphosphonate medications stop the process of renewal and preserve older bone.
Prolia more intensely stops the process of renewal than bisphosphonates and adds bone over the fissured bone.
Evenity slows the resorption of newer bone and adds more bone than Prolia.
Each of these medications has value in some situations for some people with osteoporosis or cancer.
From what I understand Forteo is the osteoporosis drug with the least side effects. I haven't experienced any negative side effects. I haven't taken any of the other medications so I can't make a valid personal comparison to the others. But I so like this drug.
Tymlos is thought to have a stronger effect on bone density in the hips than Forteo. It may be the better drug. A person might be very slightly more likely to experience hypercalcemia with Forteo than Tymlos and your endocrinologist will watch your calcium.
While the two medication have the same mechanism they are different. Tymlos is 80mcg of medication and Forteo is 20mcg. Forteo is a more simple drug. Tymlos contains the preservative phenol which some people are allergic to.
While I like the mechanism of action of Forteo and Tymlos. I positively dislike the mechanism of action of all the others. But you might take a good look at the others. If you can think of any questions I'm happy to answer.