I did not say it is not well tolerated. Nor did I mean swallowing an entire pill is equivalent to the topical. I just meant if you swallow the amount that was absorbed through your skin, you will get the same effect and save money on the amount on your skin and not have the cosmetic issues of applying a cream. Yes, at low doses it is very safe, and at 750mg/day, it is still not that harmful, as it is better than cancer.
It's androgenic side effects would be like taking propecia, except instead of getting less DHT binding to androgen receptors, they would get less testosterone as well. It is not a 5ar blocker, but a receptor blocker, but the androgenic side effects should be similar if you get any. I doubt most people would, since they don't get any from propecia, though there is the blocked testosterone everywhere in your body as well, so that would affect areas with 5ar1 as wells as areas with 5ar2 as well as areas with neither that just use testosterone, whereas propecia only affects areas with 5ar2.
Felk, that was not a typo. Placebo was put on the other flank organ, and they both shrank equally at all doses, proving that the effect was purely systemic, not local. Cypritone affected one organ slightly more than the other, showing a slight local effect and a primarilly systemic effect. spironolactone only affected one organ. There have been tests where it was applied to half the surface area of a human body with no internal effects. The reason is spironolactone is powerful, but is quickly metabolised in the body into a very very week anti-androgen, and has no internal strength except at high oral doses. Flutamide is a weak anti-androgen and is metabolised internally into hydroxyflutamide, an stronger anti-androgen that has a long half life.
Bryan has posted this many times. I'll find it for you again.