Which of the following agent is not used in erectile dysfunction:
PGE2
Vardenafil
Phenylephrine
Alprostadil
Alpha blockers are used in erectile dysfunction not alpha agonists (phenyephrine).
Drugs useful in the management of erectile dysfuncLion (ED)
1. Phosphodiesterase inhibitors

Sildenafil
Vardenafi
Tadalafil
Udenafil

2. PGE1 analog - Alprostadil
3. Aviptadil