These drugs are either the same or very similar to the HRT trans woman use (both use varied drugs around the world).
yeah. the same drugs trans women take for blocking testosterone are the same drugs used:
it still does happen, though, in a lot of the world- notably, it happened in the UK to a woman in 2015 and there have been reports here in canada of it happening against indigenous women as of 2018. allen turning as you mentioned is a great example, too.
and more.
little know fact is that the main purpose / function of HRT for trans patients was historically to sterilize them, notably in Europe and here in Canada / the US- especially Scandinavia, where CPA is more common. this changed in ~2012 in those countries but there's still like 15+ members of the EU where it's required. some US states require sterilization for document changes like name changes / marker changes.
it's mainly spironolactone, cyproterone acetate, medroxyprogesterone, and GnRH agonists for these purposes. finasteride is commonly prescribed for balding and blocks your testosterone- and, dht, so you stop balding. also bicalutamide, but this does not kill your sex drive or erectile function due to how it works in the brain / it doesn't block your testosterone [it raises it, actually] by preventing it from binding.
it's becoming more common practice / knowledge among providers to prescribe bicalutamide to trans women as it's far more optimal / beneficial and better on your body [you do need to do liver function tests though] than spiro or cypro and has very little negatives to it like loss of sex drive or depression.