Depending on why you are trying to get the mega erection, she may prefer you not OD on Viagra.
Based on a sample size of one, I can safely say that it's more of a guy thing than a post menopausal gal thing that harder is better.
With respect to the blue pill, hard to say how much it works because of the medicine itself, and how much it works instead because of the psychological feeling that it will work.Try not to overthink it.
65 - DX 64 2/13 PSA 3.68 (6 mo doubling) Gleason 9 (4+5)
T1CN0M1B stage IV w. 7 of 12 cores worst ones 70% right PNI
oligometastatic 5 tumors 1 right sacroiliac, 2 on
T4 & T9.
1st Lupron 4 month 3-28-13, 2nd Aug 1
PSA down was 3.68, 0.68 on 08-08-13
PSA 0.12 02-11-14, T<3,freeT<0.048
Prostate shrunk from 50.4 to 31.6
UF & Shands treating w curative intent, not just palliative.