Stendra (Avanafil)

(℞) Prescription Required - Stendra is also marketed as Spedra

    Stendra (Avanfil) Dosage and Side Effects

    AVANAFIL (ah VA Na fil) is used to treat erection problems in men.

    This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

    Proper Use of this medication

    Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. The dose is taken 15 to 30 minutes before sexual activity, depending on the dose you are being prescribed. You should not take the dose more than once per day. Do not take your medicine more often than directed. Talk to your pediatrician regarding the use of this medicine in children. This medicine is not used in children for this condition.

    Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once. NOTE: This medicine is only for you. Do not share this medicine with others.

    Side Effects

    Side effects that you should report to your doctor or health care professional as soon as possible: -allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue -breathing problems -changes in hearing -changes in vision -chest pain -fast, irregular heartbeat -prolonged or painful erection -seizures Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome): -back pain -dizziness -flushing -headache -indigestion -muscle aches -nausea -stuffy or runny nose

    This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

    Interactions with this medication

    Do not take this medicine with any of the following medications: -methscopolamine nitrate -nitrates like amyl nitrite, isosorbide dinitrate, isosorbide mononitrate, nitroglycerin -other medicines for erectile dysfunction like sildenafil, tadalafil, vardenafil -riociguat This medicine may also interact with the following medications: -carbamazepine -certain drugs for high blood pressure -certain drugs for the treatment of HIV infection or AIDS -certain drugs used for fungal or yeast infections, like fluconazole, itraconazole, ketoconazole, and voriconazole -grapefruit juice -macrolide antibiotics like clarithromycin, erythromycin, troleandomycin -medicines for prostate problems -phenobarbital -phenytoin -rifabutin, rifampin or rifapentine -St. John's wort

    This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

    Warnings and Precautions

    If you notice any changes in your vision while taking this drug, call your doctor or health care professional as soon as possible. Stop using this medicine and call your health care provider right away if you have a loss of sight in one or both eyes. Contact your doctor or health care professional right away if you have an erection that lasts longer than 4 hours or if it becomes painful. This may be a sign of a serious problem and must be treated right away to prevent permanent damage. If you experience symptoms of nausea, dizziness, chest pain or arm pain upon initiation of sexual activity after taking this medicine, you should refrain from further activity and call your doctor or health care professional as soon as possible. Do not drink alcohol to excess (examples, 5 glasses of wine or 5 shots of whiskey) when taking this medicine. When taken in excess, alcohol can increase your chances of getting a headache or getting dizzy, increasing your heart rate or lowering your blood pressure. Using this medicine does not protect you or your partner against HIV infection (the virus that causes AIDS) or other sexually transmitted diseases.

    Other related products

    The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

    Back to top