Use Viagra in order to treat impotence and erectile disfunction. Viagra increases the flow of the blood in the penis. It is necessary to accept Viagra in one hour before the sexual contact. Medicine acts not less than 4 hours. Do not use drug more frequently than once a day. It is not necessary to use Viagra on the schedule chart, you can drink Viagra when to you necessarily it.

Do not use Viagra, or advise with the pharmacist:

* heart disease

* in you there was operation on the heart in the recent 6 months we we recommend that you they consulted with the doctor if you you want to accept Viagra together with other drugs. Cause ambulance immediately if strong chest pain.

Also summon doctor if erection in you does not pass more than 5 hours use Viagra with the caution with the stomach ulcer be advised your doctor if:

* the loss of sight

* noise in the ears

* chest pain

* the inflated feet;

* difficult to breathe

* Swoon also can be

* migraine

* nausea

To people is older than 70 to use with the special caution