As part of the sale, it is recommended that you document this with your GP and have a health-check within 6 months if the regular need for the medication is required. Tadalafil is another licensed oral medication that treats ED, but it lasts for much longer — up to 36 hours Viagra only lasts around four hours. Men were also turning to unlicensed and potentially harmful remedies, such as Kamagra an oral jelly that claims falsely to contain the same ingredients as Viagra. These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir. Thus, men who prefer a bit more spontaneity in their sex lives will often turn to Tadalafil.Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online. Yes, penile pumps (also known as ED pumps) are over-the-counter devices that work to treat erectile dysfunction (), similar to Viagra. Viagra is usually the first-line therapy for . 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.