As apposed to three mentioned above ED drugs, that are taken peroral, Muse Urth is in fact a suppository that should be inserted right into the penis. In general, the drug starts to work in 5 -10 minutes. Some secondary effects that Muse Urth may cause quick heart rate, pain in the testicles, dizziness, bleeding from the penis, swelling and pain in the groin. In the case if you experience any of these secondary effects, consult your doctor immediately.