Many men use oral medications to treat erectile dysfunction successfully.

Consuming these medications helps to relax the muscles in the penis. This increases the blood flow to the penis causing an erection in response to sexual stimulation.

Taking these medications will not cause an erection automatically.  Sexual stimulation is required to release nitric oxide (a natural chemical our body produces) from the penile nerves, which in result, allows the penis to function properly.

Dosage, Effects, and Side-Effects of these medications vary.