02
What Is It?
Avanafil is a prescription PDE5 inhibitor approved by the FDA in 2012, designed for rapid onset.
Product Profile & Review
FDA APPROVEDPRESCRIPTION
Avanafil
The newest FDA-approved PDE5 inhibitor, notable for a fast onset that can begin around 15 minutes.
Also known as: Stendra (brand), Spedra (EU brand)
- Written by
- SynMale Editorial
- Originally Published
- October 2026
- Last Updated
- October 2026
- Medical Review
- Not yet independently reviewed
Executive Summary
- What is it?
- Prescription PDE5 Inhibitor (Prescription Medication).
- What does it contain or claim to contain?
- Avanafil (verified)
- How well verified is this specific product?
- Well Established
- Most important thing to know
- FDA-approved PDE5 inhibitor with a fast onset but less long-term real-world data.
A
Ingredient
Avanafil
Product Type
Prescription PDE5 Inhibitor
Regulatory Status
FDA Approved
Verification
Well Established
03
Claimed Active Ingredients
- VERIFIED INGREDIENTAvanafil50 / 100 / 200 mg (FDA-approved product)
A claimed ingredient is what a label or seller states. It is not treated as confirmed.
04
What Can We Verify?
Established
- Rapid onset documented in controlled trials.
- Efficacy and safety comparable to its class.
Uncertain or unverified
- Fewer years of post-market data than older agents.
05
How It Works
Sexual stimulation releases nitric oxide (NO) in penile tissue. NO raises levels of cyclic GMP (cGMP), which relaxes the smooth muscle of the corpus cavernosum so arteries widen and blood flows in.
The enzyme PDE5 normally breaks cGMP down. PDE5 inhibitors block that enzyme, so cGMP persists and smooth-muscle relaxation is sustained. They do not create arousal—stimulation is still required.
06
Evidence Level
AStrong Clinical Evidence
Grades run from A (strong clinical evidence) to F (unsupported or contradicted). How we grade.
07
Clinical Profile
- Drug Class
- PDE5 Inhibitor
- Typical Onset
- About 15–30 minutes
- Effective Window
- Up to about 6 hours
- Half-Life
- About 5 hours
- Typical Medical Dosing
- 50 / 100 / 200 mg, as prescribed
- Food Interaction
- Food may modestly delay onset
- Alcohol Considerations
- Additive blood-pressure lowering with heavy drinking
- Daily vs On-Demand
- On-demand
08
Benefits / Potential Advantages
- Fastest typical onset in its class
- Shorter planning window
09
Limitations
- Less real-world data
- Less widely available and no long-acting option
10
Side Effects & Precautions
Common effects
Headache, flushing, nasal congestion and back pain.
Major interactions & warnings
- • Nitrates (e.g. nitroglycerin, isosorbide): combined use can cause a severe, potentially life-threatening drop in blood pressure. Contraindicated.
- • Riociguat and other guanylate cyclase stimulators: contraindicated for the same reason.
- • Alpha-blockers (e.g. doxazosin, tamsulosin): not universally contraindicated, but combined use can lower blood pressure and requires medical guidance on dosing and timing.
- • Significant cardiovascular disease: sexual activity itself carries cardiac load; a clinician should assess fitness before treatment.
- • Priapism: an erection lasting more than 4 hours is a medical emergency.
- • Sudden vision loss (rare NAION reports) or sudden hearing loss: stop use and seek urgent care.
11
Regulatory Status
FDA ApprovedFDA Cleared DeviceNot FDA ApprovedDietary SupplementCompounded MedicationForeign-Market MedicationUnknownUnverified
FDA-approved for erectile dysfunction.
12
Marketing Claims vs. Evidence
Claim
What the Evidence Shows
“Works in 15 minutes”
Some users respond around 15 minutes in trials; onset varies by person.
Review Scorecard
Onset Speed
5.0/5
Duration
3.5/5
Potency & Reliability
4.0/5
Tolerability
4.0/5
Convenience
4.0/5
Overall Score
4.0/5
SynMale scores are editorial comparison tools and are not medical efficacy guarantees.
ⓘ About SynMale Ratings
SynMale numerical ratings are editorial comparison tools informed by:
- Consistency of published clinical efficacy results
- Predictability of onset and duration
- Established dosing information
- Adverse-effect data
- Treatment discontinuation data where available
- Practical dosing flexibility
- Strength and consistency of available clinical evidence
These numbers are not efficacy percentages, clinical success rates, or predictions of individual response.
Full methodology → SynMale Verdict
WELL ESTABLISHED
Approved, effective, and fast-acting, with a shorter post-market history than older agents.
Bottom Line
What You Should Know
Avanafil is an FDA-approved tablet that can start working faster than other ED pills. It has less long-term real-world data. Standard PDE5 safety rules apply.