For the management of the erectile dysfunctions, one needs to go in step wise fashion, as following;
1) The first step; Oral PDE-5 inhibitors remain the first-line therapy for the treatment of ED in men with no contraindications to their use. The medications are, sildenafil (Viagra), vardenafil (Levitra) and tadalafil (Cialis). Efficacy has been demonstrated for general population as well as special populations.
IF ABOVE FAILS or CAN'T BE USED;
2) The second step;
a) intraurethral suppositories,
b) the vacuum device, and
c) intracavernous injection.
You have tried both of the above options.
IF THIS IS NOT AN OPTION OR FAILS
3) Third step; Placement of a penile prosthesis is the primary therapeutic option for individuals who have failed or cannot tolerate prior therapies. This is a surgical option. There are two and three-piece inflatable prostheses.
For you this is not the option as you ED is likely to improve.
4) Combination therapies; You may try these, meanwhile, you feel improvement.
a) Sildenafil Plus Intraurethral Prostaglandin E1
b) Oral PDE-5 Inhibitors Plus Intracavernous Injection of Prostaglandin E1
c) Sildenafil Combined with an Oral Alpha-Antagonist
d) Intracavernous Prostaglandin E1 Combined with Oral Alpha-Antagonist
e) Vacuum device and intracavernous injection therapy
I would be happy to assist you further, if you need any more information.