वियाग्रा के साइडइफ़ेक्ट जाने

Viagra is a prescription medicine used in the treatment of erectile dysfunction and impotence in men. It works by increasing blood flow to the penis in order to help a man get and sustain an erection when he is sexually aroused or stimulated.
There are many mens or womens who takes viagra often.it is harmfull to health also.
Major Side Effects