Common use

Avanafil is a next-generation phosphodiesterase type 5 (PDE5) inhibitor specifically designed for the treatment of erectile dysfunction (ED) in adult men. It works by increasing blood flow to the penis during sexual stimulation, enabling men to achieve and maintain a firm, satisfactory erection. Avanafil is distinguished from other ED medications by its rapid onset of action — it can begin working in as little as 15 minutes, making it one of the fastest-acting erectile dysfunction treatments currently available. When you buy avanafil online, you receive a clinically proven, FDA-approved medication for male sexual health. This avanafil generic, also known as generic Stendra, provides the same pharmaceutical quality and clinical effectiveness as the branded product at a considerably more affordable price, offering a discreet and cost-effective solution for men seeking reliable ED treatment.

Dosage and direction

The recommended starting dose of avanafil is 100 mg, taken orally approximately 15-30 minutes before planned sexual activity. Depending on individual effectiveness and tolerability, your doctor may adjust the dose to 50 mg (the minimum effective dose) or increase it to a maximum of 200 mg. Avanafil can be taken with or without food, though high-fat meals may slightly delay the onset of action. Patients should not take avanafil more than once in any 24-hour period. Sexual stimulation is still required for avanafil to work — the medication does not cause an automatic erection. If avanafil does not produce satisfactory results at the prescribed dose, consult your doctor before making any changes. Do not exceed the recommended dose, as this increases the risk of side effects without improving efficacy.

Precautions

Before using avanafil for erectile dysfunction, consult your doctor for a thorough medical evaluation. Erectile dysfunction may be a symptom of underlying cardiovascular disease, hormonal disorders, neurological conditions, or psychological issues that require separate treatment. Your doctor should evaluate your cardiovascular health and overall fitness for sexual activity before prescribing avanafil, as sexual intercourse itself poses cardiac risks for men with certain heart conditions. Inform your doctor about all existing medical conditions, particularly heart disease (angina, heart failure, recent heart attack or stroke), uncontrolled high or low blood pressure, retinitis pigmentosa or other hereditary eye disorders, liver or kidney impairment, sickle cell anemia, leukemia, multiple myeloma, Peyronie's disease, or any condition that predisposes to priapism. If you experience an erection lasting more than 4 hours (priapism), seek emergency medical attention immediately, as prolonged erection can cause permanent penile tissue damage.

Contraindications

Avanafil must not be taken together with any form of organic nitrates (such as nitroglycerin, isosorbide mononitrate, isosorbide dinitrate, or amyl nitrite poppers), as the combination can cause a sudden, dangerous, and potentially fatal drop in blood pressure (severe hypotension). Nitrate medications must not be used within at least 12 hours after taking avanafil. Any known hypersensitivity or allergic reaction to avanafil or any of its inactive ingredients is an absolute contraindication. Avanafil should not be used by women or children. Patients taking guanylate cyclase stimulators such as riociguat should also avoid avanafil.

Possible side effect

The most commonly reported adverse effects of avanafil include headache (occurring in approximately 5-10% of users), facial flushing (up to 4% of users), nasal congestion or runny nose, back pain, and mild gastrointestinal discomfort. Other less common side effects may include dizziness, visual disturbances (such as blurred vision or changes in color perception), and muscle aches. Most of these side effects are mild, transient, and can often be minimized by adjusting the dose to your individual needs with guidance from your healthcare provider. Rare but serious side effects include sudden vision loss in one or both eyes (which may indicate non-arteritic anterior ischemic optic neuropathy, or NAION), sudden hearing loss or ringing in the ears, and priapism (a painful erection lasting more than 4 hours). Seek immediate medical attention if you experience any of these serious adverse events.

Drug interaction

Avanafil has important drug interactions that must be carefully managed. It must never be taken with organic nitrates (nitroglycerin, isosorbide mononitrate/dinitrate, amyl nitrite), as this combination can cause life-threatening hypotension. Concomitant use with alpha-adrenergic blockers (such as tamsulosin, doxazosin, or alfuzosin) or antihypertensive medications may cause additive blood pressure-lowering effects and increase the risk of symptomatic hypotension (dizziness, lightheadedness, fainting). Avoid excessive alcohol consumption with avanafil, as alcohol is a vasodilator that can potentiate hypotensive effects and impair sexual performance. Strong CYP3A4 inhibitors (such as ketoconazole, itraconazole, ritonavir, and clarithromycin) can significantly increase avanafil blood levels — a dose reduction may be required. Moderate CYP3A4 inhibitors (such as erythromycin, diltiazem, and fluconazole) may also require dose adjustment. Discuss all medications with your doctor before starting avanafil.

Missed dose

Avanafil is taken on an as-needed basis before sexual activity, not on a fixed daily schedule. Therefore, there is no negative therapeutic effect from missing a dose. The medication is not addictive and is designed for single-episode use. Simply take avanafil the next time you plan sexual activity, following the prescribed dosage instructions. Do not take more than one dose per day regardless of circumstances.

Overdose

Do not exceed the prescribed dose of avanafil. Overdose can cause side effects to manifest at greater intensity and duration. Symptoms of avanafil overdose may include severe dizziness, drowsiness, prolonged headache, persistent facial flushing, back pain, visual disturbances, nasal congestion, and dangerously low blood pressure. In case of overdose, seek immediate medical attention. If you experience a painful erection lasting longer than 4 hours after taking too much avanafil, this constitutes a medical emergency — go to the nearest emergency department without delay.

Storage

Keep avanafil in a dry, dark place at controlled room temperature between 20–25°C (68–77°F), protected from moisture, heat, and direct sunlight. Store in original packaging until ready to use. Keep out of reach of children and pets. Do not use avanafil past the expiration date printed on the packaging.

Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.