Chlorpromazine? Are you sure about that? I didn't know what that was so looked it up and it's an anti psychotic! If you're injecting that into your dick, it's no surprise you're getting strange results haha.
The drugs that I'm aware of that are used for ED injections are Papaverine, Phentolamine, Prostaglandin E1 and Atropine. They are mixed together in different combos and strengths to create bimix, trimix and quad mix.
DX August 2017, Age 52
PSA 6.3 (3.8 a year earlier)
Biopsy 3 of 12 cores positive, 5%, 5%, 20%; Gleason 3+3=6
MRI PI-RADS = 4
Robotic Prostatectomy - 10/30/2017
Final pathology G7 (3+4), pT2cN0, approx. 30% involvement
Pad free 10 days after surgery, now 100% continent
40 mg/day sildenafil; Trimix ~2-3days/week
PSA @ 3 months=0.02