Sildenafil Liqrev, Revatio is used to improve the ability to exercise in adults Liqrev, Revatio and children 1 year of age and older Revatio with pulmonary arterial hypertension PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. How can I best manage other health conditions with my erectile dysfunction? The most common side effects of VIAGRA: headache; flushing; upset stomach; abnormal vision, such as changes in color vision such as having a blue color tinge and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash. What, if anything, seems to improve your symptoms?Before taking Viagra, be sure to tell your doctor about all medications you take, including prescription and over-the-counter types. Also describe any vitamins, herbs, or supplements you take. There are three main reasons you shouldn’t try to deal with erectile dysfunction on your own: It can be treated: Sometimes, it’s as simple as taking a pill your doctor prescribes. There are. Due to this interaction, doctors typically will not prescribe Viagra with these drugs. Examples include: riociguat (Adempas) sildenafil (Revatio) tadalafil (Adcirca) Viagra and other erectile dysfunction (ED) medications. Because Viagra may interact with other medications for ED, doctors typically will not prescribe Viagra with these drugs.