The best replacement for progestin is progesterone.

The best alternatives to progestin are rated as following:
★★★★★  progesterone
★★★  estrogen
★  combination birth control pills
★  bioidentical progesterone
  natural progesterone
  levonorgestrel
  drospirenone
  aygestin
  progestin

Your alternative for progestin is not listed? Suggest!
Speaking about progestin, one probably shouldn't forget about estrogen.

Other search terms related to progestin and their ratings are:
★★★★★ estrogen
You have in mind a companion for progestin and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of progestin in all years. Click on graph for more.
progestin
progesterone
estrogen