Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. Your doctor may adjust your dose as needed and tolerated. If you will be taking this medicine for pulmonary arterial hypertension, your doctor will want to check your progress at regular visits. It may take longer to work if you take it with food. You could also ask your pharmacist for advice on other ways to help you remember to take your medicine. Use protective measures and ask your doctor if you have any questions about this.The highest recommended Viagra dose for treating erectile dysfunction (ED) is mg per day, according to the drug’s manufacturer. Doses of mg or mg would be . Do not take sildenafil if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some . Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Brand names: Revatio, Viagra Drug class: Impotence agents Medically reviewed by Sophia Entringer, PharmD. Last updated on .
