Spironolactone - how long does it take for a men 2 grow breast?

I have no idea as everybody is different; it will also depend on your testosterone levels and how effective medication will be to reduce that to where it is no longer bioavailable or even closer to female levels and also other hormone levels they have to 'adjust'.

I was given Spironolactone (plus another diuretic) for ascites and edema but having unnaturally low Testosterone levels (bioavailable: 0.0 nmol/L) I also grew breasts at an alarming rate (no wonder teenage and older girls hate being groped when they have tender breasts; it hurts). Male chest to boobage (look and feel real, so no tight t-shirts for me anymore) in 8 months when I discontinued the Spironolactone (exclusively due to this effect; if I hadn't stopped in April I'd be a B or C cup by now). When questioned; the Doctor, after a small, but not unkind, laugh, commented that an off-label use of Spironolactone was to increase breast growth/size in younger women.

Good luck with your personal journey.