Before Using

Drug information provided by: Micromedex

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Avanafil is not indicated for use in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of avanafil in the elderly.

Pregnancy

Information about this avanafil-oral-route
Pregnancy Category Explanation
All Trimesters C Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Amyl Nitrite
  • Erythrityl Tetranitrate
  • Isosorbide
  • Isosorbide Dinitrate
  • Nitroglycerin
  • Pentaerythritol Tetranitrate
  • Riociguat

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Atazanavir
  • Boceprevir
  • Clarithromycin
  • Conivaptan
  • Efavirenz
  • Etravirine
  • Indinavir
  • Itraconazole
  • Ketoconazole
  • Lopinavir
  • Nefazodone
  • Nelfinavir
  • Nevirapine
  • Posaconazole
  • Ritonavir
  • Saquinavir
  • Telaprevir
  • Telithromycin
  • Voriconazole

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Amlodipine
  • Doxazosin
  • Erythromycin
  • Tamsulosin

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following may cause an increased risk of certain side effects but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco.

  • Ethanol

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Abnormal penis, including curved penis and birth defects of the penis—Chance of problems occurring may be increased and this medicine should be used with caution in these patients.
  • Angina (severe chest pain), unstable or
  • Arrhythmia (within the last 6 months) or
  • Congestive heart failure or
  • Heart attack (within the last 6 months) or
  • Hypertension (high blood pressure), uncontrolled or
  • Hypotension (low blood pressure) or
  • Retinal disorders (eye problem) or
  • Retinitis pigmentosa (an inherited eye disorder) or
  • Stroke (within the last 6 months)—Should not be used in patients with these conditions.
  • Bleeding disorders or
  • Stomach ulcers—Chance of problems occurring may be increased; it is not known if the medicine is safe for use in these patients.
  • Heart disease, underlying—Chance of low blood pressure occurring is greater; avanafil should be used carefully in these patients.
  • Leukemia (blood related cancer) or
  • Multiple myeloma (blood related cancer) or
  • Sickle-cell anemia (blood disorder)—Avanafil should be used with caution in these patients as problems with prolonged erection of the penis may occur.
  • NAION (serious eye condition) in one or both eyes, history of—May increase your chance of getting NAION again.