Important safety information
You must not start using
Viagra if you are also using any nitrate-based drugs that have been reported to cause interference. Nitrate-based drugs can come in a variety of forms, such as patches, tablets, pills, ointments etc. Most popularly prescribed nitrate-based drugs include isosorbide mononitrate, isosorbide dinitrate and nitroglycerin. Taking
Viagra with nitrate-based medicines can lead to a sudden drop in blood pressure resulting in a stroke, fainting or sometimes even death. If you are not sure whether the medicine you are taking at the moment and intend to combine with Viagra is a nitrate-based kind, talk to your doctor or pharmacist. At least 24 hours are supposed to pass between the 2 doses of Viagra. If you think your dose of Viagra is not working properly for you, do not adjust it yourself. Instead, talk to the doctor that prescribed this medicine to make sure the dose can be increased and this is unlikely to cause serious health effects. You are not supposed to take Viagra and have sex if your health care provider recommended abstaining from sexual activity because of too much strain put on your heart. If you experience dizziness, nausea and chest pain while having sex, stop the activity and contact your health care provider as soon as possible.