Avanafil not working first time? Here's why

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What to Do When Avanafil Doesn't Work the First Time

Published: 6 November 2026

If you've found avanafil not working first time, you're not alone—many men need more than one attempt before finding the right approach with any ED medication. Avanafil (brand name Spedra) can be highly effective, but success often depends on correct timing, adequate sexual stimulation, and avoiding common mistakes such as taking it after a heavy meal or with alcohol [6]. This page explains why avanafil may not work on your first try and what practical steps you can take to improve your results or explore alternatives.

Why avanafil not working first time is more common than you think

Clinical trials show that PDE5 inhibitors like avanafil typically work best after a few attempts, once you've learned how your body responds [11]. The first dose is often a learning experience: you may not have allowed enough time for the medicine to take effect, or anxiety about performance can interfere with the natural arousal process that all ED tablets require to work [1].

Avanafil is designed to act quickly—usually within 15 to 30 minutes—but individual responses vary [6]. Factors such as what you've eaten, how much alcohol you've consumed, your stress levels, and whether you felt genuinely aroused all play a role. It's also worth remembering that avanafil, like all PDE5 inhibitors, does not create an erection on its own; sexual stimulation is essential [6].

If your first attempt didn't go as planned, it doesn't mean avanafil isn't right for you. Many men find that adjusting the timing, dose, or circumstances leads to success on subsequent tries. Understanding these variables can help you approach your next attempt with more confidence and realistic expectations.

Common reasons avanafil not working first time happens

One of the most frequent mistakes is taking avanafil too close to a large or high-fat meal. Food, especially fatty food, can delay absorption and reduce the peak effect of the medicine [6]. If you took your first dose after a big dinner, the tablet may not have reached effective levels in your bloodstream when you needed it.

Alcohol is another common culprit. While a small amount is unlikely to cause problems, heavy drinking impairs erectile function directly and can also lower blood pressure, adding to the blood-pressure-lowering effect of avanafil [6]. Anxiety and performance pressure are equally important: if you were very nervous or stressed during your first attempt, your body's natural arousal response may have been suppressed, preventing the medicine from working as intended [1].

Timing matters too. Avanafil is fast-acting, but if you took it only five or ten minutes before attempting sex, it may not have had enough time to work. The recommended window is 15 to 30 minutes, though some men find they need the full half-hour [6]. Finally, insufficient sexual stimulation—whether physical or psychological—will prevent any PDE5 inhibitor from producing an erection, because these medicines enhance the body's natural response rather than creating one artificially.

Dose and individual variation

Avanafil is available in 50 mg, 100 mg, and 200 mg strengths [6]. If you started on the lowest dose, it's possible that it simply wasn't enough for your individual physiology. Your prescriber can adjust the dose based on your response and tolerability. Conversely, if you experienced side effects such as headache or flushing but no improvement in erection quality, a lower dose with better timing might be the answer. Every man's response is different, and finding the right dose often requires a bit of trial and adjustment under medical guidance.

Practical steps if avanafil not working first time for you

First, review the circumstances of your first attempt. Did you take avanafil on an empty stomach or after only a light meal? Did you wait at least 15 to 30 minutes before sexual activity? Were you relaxed and genuinely aroused? If the answer to any of these is no, your second attempt should focus on optimising these factors [6].

Avoid heavy meals and limit alcohol to one or two units at most. Give yourself plenty of time—take the tablet about 30 minutes before you anticipate sexual activity, and don't rush. Create a relaxed environment and focus on intimacy and foreplay rather than putting pressure on yourself to perform. Remember that sexual stimulation is essential for avanafil to work; the medicine supports your body's natural response but cannot replace it [6].

If you've tried avanafil two or three times with careful attention to timing and conditions and it still hasn't worked, contact your prescriber. They may suggest increasing the dose (if you started on 50 mg or 100 mg) or switching to a different PDE5 inhibitor such as sildenafil, tadalafil, or vardenafil, each of which has a different onset and duration profile [2]. It's also important to discuss any other medicines you're taking, as drug interactions can reduce effectiveness or require dose adjustments.

When to speak to your GP

If you're experiencing ED for the first time or if it has worsened recently, see your GP for a full assessment. ED can be an early warning sign of cardiovascular disease or diabetes, and treating the underlying cause may improve your symptoms [1][2]. Your GP can also review your current medications, check your blood pressure and blood sugar, and refer you to a specialist if needed. Online consultations with pharmacist prescribers are convenient for repeat prescriptions and straightforward cases, but a face-to-face GP appointment is important for new or persistent ED.

How avanafil compares to other ED treatments if first attempt fails

If avanafil hasn't worked for you after a fair trial, you have several alternatives. Sildenafil (generic Viagra) is the most widely used PDE5 inhibitor and takes effect in about one hour, with effects lasting around four to six hours [3]. Tadalafil (generic Cialis) can be taken on-demand (working within 30 minutes and lasting up to 36 hours) or as a low daily dose for continuous readiness [4]. Vardenafil (generic Levitra) acts in 25 to 60 minutes and is another option if avanafil or sildenafil haven't suited you [5].

Each PDE5 inhibitor works in a similar way but has different pharmacokinetics—how quickly it starts, how long it lasts, and how it interacts with food and other medicines. Some men respond better to one than another, and switching is a common and sensible strategy if your first choice hasn't worked [2]. Your prescriber will help you choose based on your lifestyle, other health conditions, and any medicines you're taking.

At Cured Pharmacy, all ED treatments require an online consultation reviewed by a UK-registered prescriber. You'll be asked about your medical history, current medications, and any contraindications to ensure the treatment is safe and appropriate for you. If avanafil not working first time has left you uncertain, the consultation is an opportunity to discuss alternatives and find the best option for your individual needs.

Understanding avanafil timing and how to improve results

Avanafil is marketed as the fastest-acting PDE5 inhibitor, with an onset of action as quick as 15 minutes in some men [6][11]. However, this doesn't mean it will work in 15 minutes for everyone. Individual factors such as age, metabolism, other health conditions, and even stress levels can all influence how quickly the medicine takes effect.

To give avanafil the best chance of working, take it about 30 minutes before you plan to have sex, on an empty stomach or after a light meal. Avoid grapefruit juice, which can raise avanafil levels unpredictably, and keep alcohol to a minimum [6]. Make sure you're in a relaxed state of mind and that you have time for adequate foreplay and sexual stimulation—avanafil enhances your natural response but won't work without it.

If you've been taking avanafil correctly but still find it's not working, don't assume it's the wrong medicine for you after just one try. Many men need two or three attempts to find the right timing and dose. Keep a mental note of what worked and what didn't, and adjust accordingly. If you're still not seeing results after three properly timed attempts, it's time to speak to your prescriber about dose adjustment or switching to a different PDE5 inhibitor.

The role of sexual stimulation

It's worth emphasising that no ED medicine, including avanafil, will cause an erection without sexual arousal. The tablet works by enhancing blood flow to the penis in response to sexual stimulation—it doesn't create desire or arousal on its own [6]. If you were anxious, distracted, or not genuinely aroused during your first attempt, that may be why avanafil didn't work. Focus on intimacy, take your time, and try to relax. Performance anxiety is one of the most common reasons for first-time failure with any ED treatment [1].

What to do if avanafil not working first time leads to anxiety

It's completely normal to feel disappointed or anxious if your first attempt with avanafil didn't go as hoped. However, it's important not to let one unsuccessful try undermine your confidence. ED is a common condition affecting millions of men in the UK, and treatment often requires a bit of patience and adjustment [1][10].

Performance anxiety can become a self-fulfilling cycle: worry about whether the medicine will work can prevent the natural arousal response that the medicine needs to enhance. If you find yourself feeling anxious before your next attempt, consider talking to your partner about it. Open communication can reduce pressure and help you both approach the situation with realistic expectations and mutual support.

If anxiety is a significant factor in your ED, your GP or a specialist may recommend psychological support or counselling alongside medication. Cognitive behavioural therapy (CBT) and other talking therapies have been shown to help men with ED, particularly when psychological factors are involved [2]. Combining medication with addressing the emotional side of ED often leads to better long-term outcomes than medication alone.

Scientific References

1. NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 6 November 2026]
2. National Institute for Health and Care Excellence. (n.d.). Erectile dysfunction. Clinical Knowledge Summaries. https://cks.nice.org.uk/topics/erectile-dysfunction/ [accessed 6 November 2026]
3. Joint Formulary Committee. (n.d.). Avanafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/avanafil/ [accessed 6 November 2026]
4. Feldman, H. A., Goldstein, I., Hatzichristou, D. G., Krane, R. J., & McKinlay, J. B. (1994). Impotence and its medical and psychosocial correlates: Results of the Massachusetts Male Aging Study. Journal of Urology, 151(1), 54–61. https://pubmed.ncbi.nlm.nih.gov/8254833/ [accessed 6 November 2026]
5. National Institute for Health and Care Excellence. (2014). Erectile dysfunction: avanafil (ESNM45). https://www.nice.org.uk/advice/esnm45 [accessed 6 November 2026]

Information on this page is for educational purposes only and is not medical advice. Prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting or changing any medication.