It's the only thing that worked for me for both of my pregnancies. Shady Grove switched from Antagonist to MDLF for me after my first IVF failed with them.
For whatever reason, they went back to Antagonist when I tried to get pregnant with #2. When it didn't work after 3 fresh cycles, and they refused to try anything different, I switched to CCRM in CO.
I believe they did some iteration of MDLF there, and it worked and I had twins.
I don't remember my dosages.