If you want a DHT blocker, saw palmetto does that pretty well. I took hundreds and hundreds of those before I moved on to stronger stuff.
BTW, on the subject of the other drugs, while you can get these meds on line w/o a prescription, they are all pretty heavy meds and can really cause major problems if you aren't being monitored by a physician. Serious stuff. Self medication is really a last resort. What good is having boobs when you are drooling from a stroke?
The most dangerous drug that I was willing to try as an anti-androgen when I was not at the place where my family would allow me to seek care for being trans was cimetidine. It is Tagamet and available over the counter. It does block testosterone and does cause breast development. Spiro isn't cheap but the cimetine actually cost me more and it isn't as effective. I took 1800 mgs a day of cimetidne but when I look back at it, it was a stupid thing to do. I should have done it according to HBS and WPATH. I was desperate and had no family backing. When my GID became crippling, I finally got help and from a doctor.
Maggie