Tacrolimus safe?

Hello everyone, a long time ago i used a steroid cream for 3 days to remove eyelid eczema and then tacrolimus ointment everyday for 6 months morning and night, ive noticed as soon as i hopped off it my eyes flared up bad again, how long does this last? I also heard tacrolimus 0.1 ointment can apparently cause erectile dysfunction, is this true? pls help