Avanafil Chest Pain: Causes, Duration & When to Seek Help

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Key takeaways

• Avanafil chest pain is uncommon, affecting fewer than 1 in 100 men, and usually resolves within 4 to 6 hours.
• Severe chest pain during sex or pain that spreads to your arm or jaw requires immediate medical help—call 999.
• Never take avanafil with nitrates, nicorandil, riociguat, or poppers, as this can cause dangerous chest pain and low blood pressure.
• If mild chest discomfort persists, contact your prescriber to discuss a lower dose or an alternative ED treatment.
• Cured Pharmacy offers a range of ED medicines with UK prescriber review to find the safest option for you.

How Common Is Avanafil Chest Pain?

Chest pain is listed as an uncommon side effect of avanafil, meaning it affects fewer than 1 in 100 men who take the medicine [6]. In clinical trials, most men experienced no chest discomfort at all, and the majority of side effects reported were mild and temporary, such as headache or flushing.

It's important to distinguish between different types of chest sensation. Some men notice a feeling of warmth or mild tightness across the chest due to avanafil's effect on blood vessels, which is usually harmless and short-lived. However, true chest pain—especially if it feels like pressure, squeezing, or radiates to the arm, neck, or jaw—requires immediate medical attention, as it may indicate a heart problem rather than a simple side effect.

If you experience chest pain during or after sexual activity while taking avanafil, stop what you're doing and seek urgent help. Never ignore chest pain, particularly if it's severe, new, or different from anything you've felt before [6][12].

Why Does Avanafil Cause Chest Pain in Some People?

Avanafil belongs to a group of medicines called PDE5 inhibitors, which work by relaxing blood vessels to improve blood flow to the penis during sexual stimulation [6]. Because these medicines affect blood vessels throughout the body, they can also cause a small drop in blood pressure, leading to sensations such as flushing, dizziness, or occasionally chest discomfort.

In some cases, chest pain may be related to the physical exertion of sexual activity itself, rather than the medicine. Men with underlying heart conditions—such as angina, coronary artery disease, or poorly controlled high blood pressure—are at higher risk of chest pain during sex, and avanafil may unmask a cardiovascular problem that was already present but not yet diagnosed [2][6].

Avanafil can also interact with other medicines that affect blood pressure. If you take alpha-blockers for prostate symptoms or blood-pressure-lowering medicines, the combination can increase the risk of dizziness and chest discomfort. That's why it's essential to declare all your current medicines during your online consultation, so the prescriber can check for interactions and adjust your dose if needed [6][12].

Dangerous Interactions That Can Cause Chest Pain

Never take avanafil if you use nitrates (such as GTN spray, isosorbide mononitrate, or isosorbide dinitrate) for angina, or nicorandil, riociguat, or recreational drugs known as 'poppers' (amyl or alkyl nitrites). Combining avanafil with any of these can cause a sudden, dangerous drop in blood pressure, leading to severe chest pain, fainting, heart attack, or stroke [6][12]. If you develop chest pain while taking avanafil and you have used any of these substances, call 999 immediately and tell the paramedics what you have taken.

How Long Does Avanafil Chest Pain Last?

If chest discomfort is a mild side effect related to avanafil's effect on blood vessels, it typically appears within 30 minutes to an hour of taking the tablet and fades as the medicine leaves your system. Avanafil has a relatively short duration of action compared to other PDE5 inhibitors, with effects usually lasting around 4 to 6 hours, so any mild chest warmth or tightness should resolve within this timeframe [6][11].

However, if chest pain is severe, lasts longer than a few minutes, or occurs during sexual activity, it may not be a simple side effect. Chest pain that persists, worsens, or is accompanied by shortness of breath, sweating, nausea, or pain radiating to the arm or jaw is a medical emergency and requires immediate assessment [12].

Do not wait to see if severe chest pain goes away on its own. Call 999 or go to A&E straight away. If the pain is mild and resolves quickly, you should still contact your GP or the prescribing service to discuss whether avanafil is the right treatment for you, or whether a different dose or alternative medicine might be more suitable.

Self-Care Tips for Managing Mild Chest Discomfort with Avanafil

If you experience mild chest warmth or tightness that is not severe and resolves quickly, there are a few steps you can take to reduce the likelihood of it happening again. First, make sure you're taking the correct dose: avanafil is available in 50mg, 100mg, and 200mg strengths, and starting on the lowest effective dose can minimise side effects [6][11]. Your prescriber will recommend the best dose for you based on your health and other medicines.

Avoid heavy meals and excessive alcohol before taking avanafil, as both can increase the risk of side effects and make the medicine less effective. Staying well hydrated and avoiding sudden changes in posture (such as standing up quickly) can also help prevent dizziness and chest discomfort related to blood pressure changes [6][12].

If you're taking other medicines for high blood pressure or prostate problems, ensure you're stable on those treatments before starting avanafil, and always take the lowest recommended dose of the ED medicine. If mild chest discomfort persists or becomes bothersome, contact your prescriber to discuss adjusting your dose or trying a different PDE5 inhibitor, such as sildenafil or tadalafil, which may suit you better.

When to Stop Taking Avanafil

Stop taking avanafil and seek medical advice if you experience repeated episodes of chest pain, even if mild, or if you develop new symptoms such as dizziness, fainting, or an irregular heartbeat. Do not take another dose until you have spoken to a doctor or pharmacist. If chest pain occurs during sex, stop the activity immediately, sit or lie down, and call for help if the pain does not resolve within a few minutes [6][12].

When to Seek Urgent Help for Avanafil Chest Pain

Chest pain can be a sign of a serious heart problem, and it's vital to know when to get emergency help. Call 999 or go to A&E immediately if you experience chest pain that feels like pressure, heaviness, or squeezing, especially if it spreads to your arms, neck, jaw, back, or stomach, or if it's accompanied by shortness of breath, sweating, nausea, or feeling faint [1][6][12].

If you develop chest pain during or shortly after sexual activity while taking avanafil, stop what you're doing and rest. If the pain does not ease within a few minutes, or if it's severe, call 999. Do not drive yourself to hospital. Tell the paramedics or A&E staff that you have taken avanafil, as this information is important for your treatment—particularly because some emergency heart medicines (nitrates) cannot be given if you have recently taken a PDE5 inhibitor [6][12].

Even if chest pain resolves quickly, you should contact your GP or the prescribing service the same day to discuss whether it's safe to continue using avanafil. Your doctor may want to check your heart health, review your other medicines, or suggest an alternative treatment. Never ignore chest pain or assume it's 'just' a side effect without getting it checked.

Alternatives to Avanafil If Chest Pain Persists

If you continue to experience chest discomfort with avanafil, or if your prescriber advises against continuing it, there are several other effective treatments for erectile dysfunction available. Other PDE5 inhibitors, such as sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra), work in a similar way but have different durations of action and side-effect profiles, so one may suit you better than another [3][4][5].

Sildenafil is taken about an hour before sex and lasts around 4 to 6 hours; tadalafil can be taken on-demand (lasting up to 36 hours) or as a low daily dose; and vardenafil works within 25 to 60 minutes. Your prescriber will help you choose the most appropriate option based on your lifestyle, health conditions, and any side effects you've experienced. At Cured Pharmacy, all ED treatments require an online consultation reviewed by a UK prescriber to ensure they are safe and suitable for you.

If PDE5 inhibitors are not suitable—for example, if you have a heart condition that makes them unsafe, or if side effects persist—your GP may suggest alternative treatments such as Vitaros (alprostadil cream) or Caverject (alprostadil injection), vacuum erection devices, or referral to a specialist for further assessment [2][7]. Erectile dysfunction can be an early warning sign of heart disease or diabetes, so it's important to see your GP for a full health check if you're experiencing new or worsening ED [1][2].

How Cured Pharmacy Can Help

Cured Pharmacy is a GPhC-registered online pharmacy (GPhC 9012511) offering a range of ED treatments, including Spedra (avanafil), sildenafil, tadalafil, and vardenafil. Every order begins with a confidential online consultation reviewed by a UK prescriber, who will check your medical history, current medicines, and any side effects you've experienced to recommend the safest and most effective treatment. If you've had chest pain with avanafil, our prescribers can discuss alternative options and adjust your treatment plan to suit your needs.

When to get urgent help

• Chest pain that feels like pressure, squeezing, or heaviness, especially if it spreads to your arm, neck, jaw, or back
• Chest pain during or after sex that does not resolve within a few minutes of resting
• Chest pain accompanied by shortness of breath, sweating, nausea, dizziness, or feeling faint
• Sudden loss of vision or hearing while taking avanafil
• An erection lasting more than 4 hours (priapism), which requires immediate A&E treatment to prevent permanent damage

Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.