I can tell you first hand, pharmacies despise this practice. The site owner gets an even larger share when the ad is clicked on by a user. This should be discontinued. How much can you save with GoodRx? PBM administrative fee sharing GoodRx makes money every time someone uses one of their coupons to fill a prescription. The bottomline on GoodRx The bottomline on GoodRx is that it does a great job for those want to compare prices on their medications.Stendra (avanafil) used to treat erectile dysfunction (ED). It’s taken by mouth as needed, but only for a maximum of once daily. For best results, it should be taken 15 minutes before sexual activity. Its effects last around 6 hours. Some of the more common side effects of Stendra (avanafil) include headache and flushing. Stroke. High blood pressure: Dizziness, faint, extremely bad headache. Seizures. The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.  · Terazosin is an alpha-1 blocker. It treats BPH by relaxing certain muscles in the prostate and bladder, which allows urine to flow more easily. Terazosin can also treat high blood pressure by relaxing your blood vessels. This helps blood flow smoothly through the .