Those with pre-existing conditions should always consult a healthcare provider before taking new medications or supplements. Erectile dysfunction medications require a prescription from a licensed provider. Refills: See if you can set up automatic refills or order as needed. You will need to show a prescription if you require these. Finding your Local Farmacia via the Internet If you are moving to a new area and are unsure of where the nearest farmacia is, use the link below where you can search for a farmacia near you.According to price-comparison site test1.ru, generic Revatio will cost you as little as $ per pill, depending on where you fill your prescription. That’s compared with . Oral medicines for ED usually work well and cause few side effects. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil . You may be wondering whether you can purchase non-prescription drugs and medicines online in Spain and other parts of the EU and the answer is yes you can. However, it is .