Stendra Side Effects
Generic name: avanafil
Note: This document contains side effect information about avanafil. Some of the dosage forms listed on this page may not apply to the brand name Stendra.
Some side effects of Stendra may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to avanafil: oral tablet
Get emergency medical help if you have any of these signs of an allergic reaction while taking avanafil (the active ingredient contained in Stendra) hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
If you become dizzy or nauseated during sexual activity, or if you have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of avanafil.
Stop using avanafil and call your doctor at once if you have any of these serious side effects:
changes in vision or sudden vision loss;
ringing in your ears, or sudden hearing loss;
chest pain, pounding heartbeats or fluttering in your chest;
pain, swelling, warmth, or redness in one or both legs;
shortness of breath, swelling in your hands or feet;
feeling light-headed, fainting; or
penis erection that is painful or lasts 4 hours or longer.
Less serious side effects of avanafil may include:
redness or warmth in your face, neck, or chest;
headache, mild dizziness;
cold symptoms such as stuffy nose, sinus pain, or sore throat;
diarrhea, constipation, upset stomach; or
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
For Healthcare Professionals
Applies to avanafil: oral tablet
Cardiovascular side effects have included flushing (up to 10.1%), abnormal electrocardiogram (up to 3.0%), hypertension (less than 2%), angina (less than 1%), unstable angina (less than 1%), deep vein thrombosis (less than 1%), and palpitations (less than 1%).
Dermatologic side effects have included rash (less than 2%), and pruritus (less than 1%).
Gastrointestinal side effects have included dyspepsia (less than 2%), nausea (less than 2%), constipation (less than 2%), diarrhea (less than 2%), gastritis (less than 1%), gastroesophageal reflux disease (less than 1%), hypoglycemia (less than 1%), oropharyngeal pain (less than 1%), stomach discomfort (less than 1%), and vomiting (less than 1%).
General side effects have included peripheral edema (less than 1%), and fatigue (less than 1%).
Genitourinary side effects have included balanitis (less than 1%), increased erection (less than 1%), hematuria (less than 1%), pollakiuria (less than 1%), and urinary tract infection (less than 1%).
Laboratory abnormalities have included increased blood glucose (less than 1%), increased alanine aminotransferase (less than 1%).
Musculoskeletal side effects have included back pain (up to 3.2%), arthralgia (less than 2%), muscle spasms (less than 1%), musculoskeletal pain (less than 1%), myalgia (less than 1%), and pain in extremity (less than 1%).
Nervous system side effects have included headache (up to 12.1%), dizziness (up to 2.0%), insomnia (less than 1%), somnolence (less than 1%), and vertigo (less than 1%).
Psychiatric side effects have included depression (less than 1%).
Renal side effects have included nephrolithiasis (less than 1%).
Respiratory side effects have included nasopharyngitis (up to 5.1%), nasal congestion (up to 3.0%), upper respiratory infection (less than 2%), bronchitis (less than 2%), influenza (less than 2%), sinusitis (less than 2%), sinus congestion (less than 2%), cough (less than 1%), exertional dyspnea (less than 1%), epistaxis (less than 1%), and wheezing (less than 1%).
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