HRT.mom
https://scienceclass.pages.gay/

HRT Cafe
https://hrt.hrtarchive.org/hrtcafe.net/Homebrew/

“It does not take a chemist to make gel, sublingual or even injections small scale for personal use or to distribute locally. […] A few hundred dollars is all you need to get started, you’ll be doing yourself a favor and strengthening the decentralized flow of life saving medication that it seems like endless people want gone. […] Known homebrewers are not going to be around forever.” (TeaHRT, not me)