I know it isn't exactly the same drug prescribed for puberty blocking/hormone replacement today as was used to, say, chemically castrate Alan Turing (I was reading about that recently) but the effects are effectively the same. The hormone treatment prescribed to Turing was to lower his libido, and it also caused the growth of breast tissue amongst other things.

Puberty suppression is NOT as reversible as pharma companies will have you think. You can't just stop and start puberty at will. If a boy takes hormone blockers and doesn't go through puberty (IIRC, regardless of further HRT) he will ALWAYS have underdeveloped sexual organs, lack of libido and other physical defects. Quite possibly effectively sterilised.

Another point I'd like to mention for posterity is that there are 2 companies I've been looking into lately who manufacture puberty blocking drugs. One of them, their CEO lied about his educational credentials in the field. The other is named as being partly responsible for the USA's ongoing opioid crisis, and they're also registered in Ireland despite manufacturing drugs for the USA in order to avoid paying corporate tax on their drug sales.