Vardenafil and Edoxaban: Can You Take Them Together?

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What is vardenafil and edoxaban used for?

Vardenafil is a prescription medicine used to treat erectile dysfunction (ED) in men [5]. It belongs to a group of medicines called PDE5 inhibitors, which help increase blood flow to the penis during sexual stimulation, making it easier to get and keep an erection. Vardenafil is the generic version of Levitra and is typically taken about 25 to 60 minutes before sexual activity, with effects lasting for several hours [5].

Edoxaban is an anticoagulant (blood thinner) prescribed to prevent blood clots and reduce the risk of stroke in people with atrial fibrillation, or to treat and prevent deep vein thrombosis (DVT) and pulmonary embolism (PE) [12]. It works by blocking a clotting protein called Factor Xa, which helps stop dangerous clots from forming in your blood vessels. Because edoxaban affects how your blood clots, it's important that any new medicine you take is checked for safety alongside it.

Both medicines are prescription-only in the UK and require a clinical assessment by a qualified prescriber. At Cured Pharmacy, our online consultation process ensures that a UK-registered prescriber reviews your medical history, current medications, and any conditions that might affect treatment safety before approving a prescription.

Is there an interaction between vardenafil and edoxaban?

There is no major direct pharmacological interaction reported between vardenafil and edoxaban [5][12]. This means that vardenafil does not significantly affect how edoxaban works to thin your blood, and edoxaban does not directly interfere with vardenafil's ability to help with erections. The two medicines work on completely different systems in your body: vardenafil affects blood flow to the penis by relaxing smooth muscle, while edoxaban prevents clot formation by blocking a clotting factor.

However, both medicines can have an effect on your cardiovascular system, so your prescriber will need to assess your overall heart health and bleeding risk before approving treatment. Vardenafil can cause a small drop in blood pressure, which is usually not a problem for most men, but needs careful consideration if you have heart conditions or take other blood-pressure-lowering medicines [5]. Edoxaban increases your risk of bleeding because it prevents clots, so any additional factors that might affect bleeding or cardiovascular stability must be reviewed.

Your prescriber will check whether sexual activity itself is safe for you, as this is an important consideration for anyone with heart problems or taking anticoagulants. If you have unstable angina, a recent heart attack or stroke, severe heart failure, or very low blood pressure, ED treatment may not be suitable [2][5]. The online consultation at Cured Pharmacy includes detailed questions about your heart health, current medicines, and any bleeding disorders to ensure vardenafil is safe for you.

How the prescriber assesses safety

During your consultation, the prescriber will ask about your cardiovascular health, why you are taking edoxaban, any history of bleeding problems, and all other medicines you take. They will check that you are not taking any medicines that are contraindicated with vardenafil, such as nitrates, nicorandil, riociguat, or another PDE5 inhibitor [5]. They will also review whether you take any medicines that can raise vardenafil levels in your blood (such as certain antifungals or HIV medicines), which would require a lower starting dose or make treatment unsuitable [5]. If you are stable on edoxaban and have no other contraindications, vardenafil can usually be prescribed safely, starting at the lowest effective dose.

When to get urgent help

• Erection lasting longer than 4 hours (priapism) — go to A&E immediately
• Sudden loss of vision or hearing — stop vardenafil and seek urgent medical help
• Chest pain during or after sex — call 999 or go to A&E
• Severe or unusual bleeding (vomiting blood, blood in urine or stools, severe headache) — contact your GP or anticoagulant clinic the same day or go to A&E
• Severe dizziness, fainting, or signs of very low blood pressure — sit or lie down and seek medical advice promptly

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

What does your prescriber need to know about vardenafil and edoxaban?

When you request vardenafil treatment, you must declare that you are taking edoxaban and explain why it was prescribed (for example, atrial fibrillation or previous blood clots). Your prescriber needs to know the dose of edoxaban you take, how long you have been on it, and whether your blood-thinning treatment is stable and well-monitored. This helps them assess your overall cardiovascular and bleeding risk.

You should also tell your prescriber about any other medicines you take, including over-the-counter products, herbal supplements, and recreational substances. Certain medicines can interact with vardenafil and must be avoided: do not take vardenafil together with nitrates (such as GTN spray or isosorbide mononitrate), nicorandil, riociguat, amyl or alkyl nitrites (poppers), or another PDE5 inhibitor, as these combinations can cause a dangerous fall in blood pressure [5]. If you take alpha-blockers for prostate symptoms or blood pressure (such as tamsulosin or doxazosin), your prescriber will usually start you on the lowest dose of vardenafil and check that you are stable on the alpha-blocker first [5].

Your prescriber will also ask about any history of heart attack, stroke, angina, heart failure, very low or high blood pressure, liver or kidney problems, bleeding disorders, stomach ulcers, and eye conditions such as sudden vision loss (NAION) or inherited retinal disorders [2][5]. All of these factors help determine whether vardenafil is safe and what dose is appropriate for you.

Practical advice for taking vardenafil and edoxaban together

If your prescriber approves vardenafil, take it exactly as directed, usually about 25 to 60 minutes before you plan to have sex [5]. Vardenafil is available in 5 mg, 10 mg, and 20 mg tablets; the usual starting dose is 10 mg, taken no more than once a day. You can take it with or without food, but a heavy or high-fat meal may delay how quickly it works. Sexual stimulation is needed for vardenafil to be effective—it will not cause an erection on its own.

Continue taking your edoxaban exactly as your doctor prescribed. Do not stop or change the dose of edoxaban without medical advice, as this could increase your risk of stroke or blood clots. If you experience any unusual bleeding (such as blood in your urine or stools, prolonged nosebleeds, or unexpected bruising), contact your GP or anticoagulant clinic promptly, even if you think it is unrelated to vardenafil.

Avoid drinking large amounts of alcohol when taking vardenafil, as alcohol can make erectile dysfunction worse and add to the blood-pressure-lowering effect, increasing the risk of dizziness or fainting [5]. Grapefruit juice can raise vardenafil levels in your blood and should be avoided. Do not use recreational drugs, especially poppers (amyl or alkyl nitrites), as the combination with vardenafil can cause a severe and dangerous drop in blood pressure [5].

What to do if you start a new medicine

If your doctor prescribes a new medicine while you are taking vardenafil and edoxaban, tell them you are using both treatments. Some medicines can interact with vardenafil or edoxaban, and your prescriber may need to adjust doses or choose an alternative. Always check with a pharmacist or doctor before taking any new over-the-counter medicine, herbal remedy (especially St John's wort), or supplement. If you are prescribed antibiotics, antifungals, or medicines for HIV, let the prescriber know you take vardenafil, as some of these can significantly raise vardenafil levels and require dose adjustment or temporary discontinuation [5].

At a glance

Warning signs and when to seek help with vardenafil and edoxaban

Most men tolerate vardenafil well, but you should be aware of warning signs that need urgent medical attention. If you develop an erection that lasts longer than four hours (priapism), go to A&E immediately, as this can cause permanent damage if not treated promptly [5]. Priapism is rare but is a medical emergency.

Seek urgent help if you experience sudden loss of vision in one or both eyes, as this could be a sign of a serious condition called non-arteritic anterior ischaemic optic neuropathy (NAION) [5]. Similarly, sudden decrease or loss of hearing, sometimes with ringing in the ears or dizziness, requires immediate medical assessment. Stop taking vardenafil and call 999 or go to A&E if you develop chest pain during or after sex, especially if it spreads to your arms, neck, or jaw, as this could indicate a heart problem [2][5].

Because you are taking edoxaban, be alert for signs of unusual or severe bleeding, such as vomiting blood, coughing up blood, blood in your urine or stools (black or red), severe headache, or a fall or injury to your head. These symptoms require same-day medical assessment. Common side effects of vardenafil include headache, flushing, indigestion, nasal congestion, and dizziness [5]; these are usually mild and temporary, but if dizziness is severe or you feel faint, sit or lie down and contact your prescriber for advice.

Other ED treatment options and vardenafil alternatives

Vardenafil is one of several PDE5 inhibitors available for erectile dysfunction. If vardenafil is not suitable or you would like to try an alternative, other options include sildenafil (generic Viagra), tadalafil (generic Cialis), and avanafil (Spedra) [3][4][6]. All of these medicines work in a similar way and have the same contraindications (do not take with nitrates, nicorandil, riociguat, poppers, or another PDE5 inhibitor), but they differ in how quickly they work and how long their effects last.

Sildenafil is usually taken about one hour before sex and lasts for around four to six hours [3]. Tadalafil can be taken on-demand (at least 30 minutes before sex, with effects lasting up to 36 hours) or as a lower daily dose for continuous effect [4]. Avanafil works quickly, often within 15 to 30 minutes, and may be a good choice if you want a faster-acting option [6]. Like vardenafil, none of these medicines has a major direct interaction with edoxaban, but the same cardiovascular and safety checks apply.

At Cured Pharmacy, we offer a range of ED treatments at transparent prices. All require an online consultation reviewed by a UK-registered prescriber. If you have questions about which treatment might be best for you, our clinical team can provide guidance during your consultation. Remember, if ED is a new problem, it's important to see your GP, as it can be an early warning sign of heart disease or diabetes [1][2].

Non-tablet treatments for ED

If PDE5 inhibitors are not suitable or effective for you, other prescription options include Vitaros (alprostadil cream applied to the tip of the penis) and Caverject (alprostadil injection into the penis) [7]. These treatments work differently from tablets and may be considered if you have contraindications to PDE5 inhibitors or have not responded to them. Eroxon is a topical gel medical device available without prescription that may help some men. Your GP or a specialist can discuss the full range of options, including vacuum devices, penile injections, and, in some cases, surgery.

In summary

• There is no major direct interaction between vardenafil and edoxaban.
• Your prescriber will check your heart health and bleeding risk before approving treatment.
• Do not take vardenafil with nitrates, nicorandil, riociguat, poppers, or another PDE5 inhibitor.
• Report unusual bleeding or severe side effects to your GP or anticoagulant clinic promptly.
• Vardenafil requires sexual stimulation to work and is taken 25 to 60 minutes before sex.

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