Yes Viagra is recommended for erectile dysfunction. For those men who have problem in keeping the erection firm enough for sex, Viagra works well, but yes it also has its his own side effects. Viagra, vardenafil (Levitra) and tadalafil (Cialis), all these medications are useful as they increase nitric acid which opens and relaxes blood vessels in the penis hence helps in getting or keeping the erection.
Side effects:
- Headaches
- Flushing
- Digestion
- Running nose
- Back pain and muscle pan and also
- temporary vision changes.