Used as part of a medication plan for problem drinking. Many patients acquisition online such remedies like Viagra. Did somebody tell you about when does the patent on Viagra expire? It may have different brands, but only one ingredient. Also known as erectile malfunction is defined as the impossibility to attain an erection suitable for intercourse. Currently for men of any age, it can be first symptom for strong illnesses, so it’s essential for your overall health, not just your sex life, to see a doc if you experience erection difficulties.