A. A. A. There are only five oral drugs approved by the FDA to treat erectile dysfunction: tadalafil (Cialis), vardenafil (Levitra, Staxyn), avanafil (Stendra), and sildenafil (Viagra). All work by increasing the flow of blood into the penis so that when a man is sexually stimulated, he can get an erection.
To restore deleted iPhone 4s contacts without itunes backup, you can directly scan and recover contacts from iPhone in a simple way. The steps of directly scan and recover contacts from iPhone: a) Connect your iPhone to the computer. b) Enter DFU mode and scan iPhone.c) Preview and recover iPhone contacts.o restore deleted iPhone 4s contacts without itunes backup, you can directly scan and recover contacts from iPhone in a simple way. The steps of directly scan and recover contacts from iPhone: a) Connect your iPhone to the computer. b) Enter DFU mode and scan iPhone.
1 Connect your phone to your computer and open iTunes. 2  Select your device in the left menu and click on the Restore button. 3  iTunes will ask to backup your device -- select yes. 4  It will only backup non-jailbroken applications and will restore all of your app store applications and preferences.