Sildenafil
"64 years old and can get erect but it wasn't lasting long enough to complete the sex act. Insurance won't cover Viagra but will pay for the generic Sildenafil. 20mg are prescribed for pulmonary hypertension so my doctor gave me the Rx. I take five tablets for a total dose of 100mg. It may be a little overdose for my actual needs, but the erection is amazing. I seem both longer and wider and I'm telling you, rock hard. Very satisfied and 40 tablets (8 doses) only cost me $10 co-pay.  Wife smiles all the time now!"