Avanafil (stendra)?

Avanafil (Stendra®) – a quick‑acting drug for erectile dysfunction (ED)

Category	What you need to know
Brand name	Stendra®
Generic	Avanafil
Drug class	Phosphodiesterase‑5 (PDE5) inhibitor
FDA approved	Yes – for the treatment of erectile dysfunction in men (18 +).

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How It Works

• Mechanism: Avanafil blocks the PDE5 enzyme in the penis, allowing smooth muscle relaxation and increased blood flow during sexual stimulation.
• Onset: Effects can appear as early as 15–30 minutes after ingestion (though most people start 30–60 minutes). This is faster than some other PDE5 inhibitors (e.g., sildenafil “4 hours” label, tadalafil “36 hours”).

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Typical Dosage

Situation	Suggested dose	Notes
First dose	100 mg	Start low; can titrate.
If successful	200 mg	If 100 mg is not effective, double the dose.
If 200 mg fails	300 mg	This is the maximum recommended dose.
Frequency	Once daily	Not more than once every 24 hours.
Timing	30–60 min before sex	Take on an empty stomach or with light food.
Max daily	300 mg	No more than one dose per day.

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What You Should NOT Take With Stendra

• Nitrates (nitroglycerin, isosorbide dinitrate, isosorbide mononitrate) – can cause a dangerous drop in blood pressure.
• Aliskiren (a direct renin inhibitor) – can lead to severe hypotension.
• Strong CYP3A4 inhibitors (ketoconazole, clarithromycin, ritonavir) – may increase avanafil levels.
• Strong CYP3A4 inducers (rifampin, carbamazepine, phenytoin, St. John’s wort) – can reduce effectiveness.

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Common Side Effects

• Headache (most common) – usually mild to moderate.
• Flushing – a brief warmth or redness of the face/neck.
• Nasal congestion – stuffiness or runny nose.
• Back pain – mild.
• Eye changes (visual disturbances, blurred vision) – rare, but report if persistent.

Rare: Priapism (prolonged erection >4 h) – seek medical help immediately.
Serious: Rarely, you may develop low blood pressure, dizziness, or fainting, especially if you’re dehydrated or on nitrates.

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Contraindications & Warnings

Category	Key Points
Severe heart disease	Use with caution; monitor blood pressure.
Recent stroke or heart attack	Discuss with your provider; risk may be higher.
Hypotension	Avoid if you have low resting blood pressure.
Pregnancy / Nursing	Not studied; avoid.
Alcohol	Excessive drinking can increase side effects (headache, dizziness).

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Storage & Handling

• Keep in a dry, cool place, away from children.
• Do not expose to high heat or direct sunlight.
• Store at room temperature (usually 20–25 °C / 68–77 °F).
• Expiry: 1–2 years from date of manufacture.

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Quick FAQ

Question	Answer
Can I take Stendra with other PDE5 inhibitors?	No – combining them is not recommended and may increase side‑effects.
Is there a “pre‑sex” time limit?	30–60 min before sex; can be taken up to 4 hours before activity, but most take it 30–60 min prior.
What if I miss a dose?	Skip it – do not double dose.
Is it safe to use if I have high blood pressure?	It’s generally safe, but discuss with your doctor—especially if you’re on antihypertensives.
Can Stendra help with nocturnal erections?	It’s not intended for that purpose; it only works with sexual stimulation.

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Bottom Line

Stendra (avanafil) is a fast‑acting, once‑daily oral medication for erectile dysfunction. It offers rapid onset and a relatively short half‑life, making it convenient for spontaneity. Like all PDE5 inhibitors, it’s important to avoid nitrates and be mindful of potential interactions, side‑effects, and medical conditions.

Have more questions about dosing, side‑effects, or whether it’s right for you? I’m happy to help!