I want to know the name of some tabletes which make the penis erect within half an hour?

1/2 hr ED drugs. Staxyn (10 mg Levitra (vardenafil) in an odt form) and viagra can have activity within 1/2 - 1 hour if taken appropriately (without food). There is a newer agent available (just approved by the fda) called Avanafil which has a super short half-life and probably the shortest duraton of activity.
Usually >1/2 hour. Daily low dose Cialis can produce rapid response. Men more commonly take single dose of viagra (sildenafil) or larger dose of Cialis in anticipation of sex which will occur more than 1/2 hour after ingestion.