Penis deformation: As with other medications for erectile dysfunction, men with an anatomical deformation of the penis such as angulation, cavernosal fibrosis, or Peyronie’s disease should be closely monitored by their doctors if they take this medication. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition. These factors may affect how you should use Viagra Sildenafil. Seniors: If you are 65 years of age or older, you may need a lower dose of Viagra Sildenafil. In some cases, ED can cause a strain on relationships and impact self-esteem.Typical dosing for Sildenafil (Viagra) The typical dose is to take 50 mg of sildenafil (Viagra) by mouth, about 1 hour before sex, as needed. The maximum recommended dose is mg. Don’t take sildenafil (Viagra) more than once daily (at any dose). Written by Brian Leonard, PharmD, BCACP, BCGP. Generic Viagra (sildenafil) is available as a , , , and milligram (mg) pill and in liquid form. It’s meant to be taken as needed — about an hour before sex — but shouldn’t be. Home How To Order How To Order Please Select an Order Method Online Phone How to properly place an order online with test1.ru Quickly and easily steps to get your medication from a Canadian Pharmacy Online.