Speaking from experience, combination of Androcur and Tamoxifen would quickly stop all libido and erections -- within a few days.

As you do not wish to get feminization, the Tamoxifen would certainly help that.

Also, with the combination, you can use lower doses of each. Hopefully, that would leave less of a lasting effect on your sexual functioning after you stop.

And at a lower dosage, you can probably rebound back quickly after you stop.

I don't have any data on the rebound etc because I took them for 4 yrs. So, the effects are permanent and I no longer need to take any Androcur.