I have mentioned this before. Go to your doctor and have them give you a prescription for Generic Revatio (same drug as Viagra).
Pfizer (the global drug company) sells sildenafil (the same identical drug) under two different product names:
-- Viagra: used to treat erectile dysfunction (sold in 25 mg, 50mg and 100 mg tablets)
https://www.viagra.com/
-- Revatio: used to treat pulmonary hypertension (only sold in 20 mg tablets).
http://www.revatio.com/
Pfizer charges significantly higher prices for Viagra than it does for Revatio. This price variation also parallels with generics.
A generic Viagra (not yet sold in the U.S.) is significantly more expensive that generic Revatio.
The easiest way to get the "cheap Viagra" in the U.S. is to go to your doctor and ask if you can get a GENERIC PRESCRIPTION FOR REVATIO (sildenafil in 20mg dosages). Since Revatio (or its generic) is only sold in 20 mg tablets, you will have to adjust the dosage to attempt to match the same dosage of Viagra.
Note that Pfizer goes to great lengths to try to differentiate these two products (Viagra and Revatio) even though THEY ARE THE EXACT SAME DRUG (just in different dosages).
After complaining to my primary care doctor about the price of Viagra he told me about Revatio. He said that many old women take Revatio (or the generic) for their pulmonary hypertension, and their husbands end up stealing it, using it themselves to get hard.
As a final note, Viagra for erectile dysfunction was discovered by accident. The Sildenafil compound was originally developed for the treatment of high blood pressure.
http://www.cnn.com/2013/03/27/health...sary-timeline/