Liquid sildenafil will usually be made up for you by your pharmacist. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. The 12 month certificates can be paid for by monthly direct debit. All other men with erectile dysfunction who wish to have treatment with medicines other than generic sildenafil will need to be prescribed treatment by their GP on a private prescription. Check the small print of your policy first. Kidney disease that needs to be treated with dialysis. They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction ED. · Is Viagra prescribed in dosages of mg, mg, or mg? The highest recommended Viagra dose for treating erectile dysfunction (ED) is mg per day, according to the drug’s manufacturer. Still, if your doctor says it’s okay for you to use and you end up paying out-of-pocket, you can still get the generic for a lot less than Viagra. According to price-comparison site AdSay Goodbye to Performance Anxiety and Hello to Improved Sexual Stamina! Reviews and Comparisons Of The Best Male Enhancement Products. See Which Products WorkK+ visitors in the past month.