Your doctor or other health care professional can recommend one for you based on these factors, other health conditions you have and any other medicines you take. Its effects might last longer if you have mild to moderate ED. This launch further expands the role of community pharmacy and we hope that it will play a part in reducing pressures on the overall healthcare system. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy NAION. Especially tell your healthcare provider if you take any of the following: medicines called nitrates medicines called guanylate cyclase stimulators such as Adempas riociguat medicines called alpha-blockers, such as Hytrin terazosin HCl , Flomax tamsulosin HCl , Cardura doxazosin mesylate , Minipress prazosin HCl , Uroxatral alfuzosin HCl , Jalyn dutasteride and tamsulosin HCl , or Rapaflo silodosin.Currently, there are no over the counter alternatives to Viagra available. Viagra (sildenafil) is a prescription medication, meaning it’s not available over the counter from your local. Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles . Learn more about the new over-the-counter erectile dysfunction medicine now available at Boots *Subject to stock availability & pharmacist approval Shop now* Viagra Connect is .