If you will be taking this medicine for pulmonary arterial hypertension, your doctor will want to check your progress at regular visits. Similar values for pharmacokinetic parameters were seen in normal volunteers and in the patient population, using a population pharmacokinetic approach. This medicine can cause serious side effects in patients with heart problems. Ask your doctor if you have any questions. People taking nitrates like nitroglycerin Nitrostat or isosorbide mononitrate Imdur should not take PDE5 inhibitors, as doing so could result in a dangerous drop in blood pressure. That’s not to say there aren’t just as many illegitimate sites.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 Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in is also used to treat pulmonary arterial hypertension, a serious heart and lung drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but . Attention! [Serious] Tag Notice. Jokes, puns, and off-topic comments are not permitted in any comment, parent or child.. Parent comments that aren’t from the target group will be .