Do not take STENDRA if you take any medicines called “nitrates” or “guanylate cyclase stimulators”, as these combinations can cause your blood pressure to drop suddenly to unsafe levels. A sudden drop in blood pressure can cause you to feel dizzy, faint, or have a heart attack or stroke.
Tell all of your healthcare providers that you take STENDRA. If you need emergency medical care for a heart problem, it will be important for your healthcare provider to know when you last took STENDRA.
Stop sexual activity and get medical help right away if you experience symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.
Do not take STENDRA if you:
Before you take STENDRA, tell your healthcare provider if you:
STENDRA may affect the way other medicines work.
Tell your healthcare provider about all medicines you take, including any of the following:
Do not drink too much alcohol when taking STENDRA (for example, more than 3 glasses of wine, or 3 shots of whiskey). Drinking too much alcohol when taking STENDRA can increase your chances of getting a headache or getting dizzy, increasing your heart rate, or lowering your blood pressure.
The most common side effects of STENDRA are headache, flushing, stuffy or runny nose, sore throat, and back pain.
Rare but serious side effects of STENDRA may include:
STENDRA does not protect against pregnancy or sexually transmitted diseases, including HIV.
Reference: 1. Selvin E, Burnett AL, Platz EA. Prevalence and risk factors for erectile dysfunction in the US. Am J Med. 2007;120(2): 151-157.