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Side Effects

These are the recorded side effects for PDE5 inhibitors, the class of drug which each of our treatments fall under.

Before taking any PDE5 inhibitor, you should know: People who are taking organic nitrates (e.g., Im-Dur, Nitrobid, Isordil) or nitrites should not take PDE5 inhibitors, as the combination can reduce blood pressure to dangerously low levels. People with cardiovascular conditions who have been advised by a healthcare professional to avoid sexual activity should not take PDE5 inhibitors, as they can worsen cardiovascular conditions.

Mild to moderate side effects

Headache
Upset stomach
Pharyngitis (sore throat)

Infection
Flushing
Muscle aches

Nausea
Stuffy nose
Back pain

Severe side effects

Heart attack, stroke, irregular heartbeats and death have happened rarely. Most, but not all, of these men had heart problems before taking Cialis. It is not known if Cialis caused these problems.

Abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision.

If any of these severe side effects occur, seek medical care immediately.

These are not all the possible side effects of tadalafil. See the Important Safety Information for more.

Mild to moderate side effects

Headache
Upset stomach
Trouble sleeping

Diarrhea
Nose bleed
Muscle aches

Nausea
Stuffy nose
Fever

Severe side effects

Erections that last several hours. Tell your doctor right away if you have an erection that lasts more than 4 hours.

Decreased eyesight or loss of sight in one or both eyes.

Sudden decrease or loss of hearing.

Heart attack, stroke, irregular heartbeats, and death. Most of these happened in people who already had heart problems.

More shortness of breath than usual

Low blood pressure. Symptoms of low blood pressure include feeling faint or dizzy.

If any of these severe side effects occur, seek medical care immediately.

These are not all the possible side effects of sildenafil. See the Important Safety Information for more.