I haven't done as much research on other forms of AI's and SHBG, but the fact that formestane lowers SHBG came up in numerous studies. The mechanism behind this is mainly from the fact it has its own anabolic/androgenic properties, which other AI's lack.I didn't know Form had an effect of Free T and SHBG. This is good. Do other AI's have this same effect.
Some other AI's, such as ATD, have actually been shown to compete for the AR