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  • Phosphodiesterase type 5 inhibitor
  • Treats erectile dysfunction
  • Can get to work within 25 minutes
  • Always read the patient information leaflet before use
Upon completion of a medical consultation with one of our health care professionals you can expect prices to start from £29.99
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The Product Information was written and researched on 09/04/2021 . Find out more. See less.

What is vardenafil? 

Vardenafil is a type of medicine called a phosphodiesterase type 5 inhibitor, used to treat erectile dysfunction in adult men. Erectile dysfunction is a common condition that results in difficulty getting or keeping an erection, affecting at least 1 in 10 men from time to time. It happens when there isn’t enough blood flow into the penis. 

What is the recommended dosage?

The recommended dosage for vardenafil is one tablet taken around 30 minutes to one hour before you plan to have sex. You must not take more than one tablet a day. 

Vardenafil usually comes in doses of 5mg, 10mg or 20mg - the recommended starting dose is usually 10mg. If you feel that the effect of vardenafil is too strong or too weak, speak to a doctor or Chemist4U pharmacist.

With sexual stimulation, you may achieve an erection anywhere from 25 minutes up to four to five hours after taking vardenafil. 

Do not exceed the recommended dosage - you may experience unwanted side effects and it won’t make the medicine work better. 

How does vardenafil treat erectile dysfunction?

This medicine contains the active ingredient vardenafil, usually in doses of 5mg, 10mg, or 20mg. Vardenafil is a type of medicine that’s known as a PDE5 inhibitor. This means it blocks an enzyme that regulates blood flow into the penis. When you’re sexually stimulated, vardenafil will increase this blood flow into the penis and heighten the natural process of arousal, allowing for an erection that lasts long enough for satisfactory sexual activity. 

What causes erectile dysfunction?

Erectile dysfunction, or impotence, refers to when a man struggles to get or keep an erection. It’s really common and affects most men from time to time. Short term causes of erectile dysfunction can include stress, tiredness, anxiety and alcohol. If, however, erectile dysfunction is happening more often, underlying issues could be causing it. Common causes can include, but aren’t limited to: 

  • High blood pressure

  • High cholesterol

  • Diabetes

  • Obesity

  • Certain medications

  • Alcoholism

  • Tobacco use

  • Depression

  • Stress & anxiety

  • Relationship problems

Erectile dysfunction can lead to low self-esteem or embarrassment, but it’s certainly not something to be ashamed of. If you’re experiencing erectile dysfunction that isn’t getting any better, talk to your doctor to make sure there aren’t any underlying health conditions.

Vardenafil with food & drink

Vardenafil is perfectly safe to take with or without food, but it’s better not to take it after a big meal because this could delay the effect. 

Grapefruit juice can interfere with the effect of vardenafil, so you should not drink this whilst you’re taking the medicine. 

You can take vardenafil with alcohol, as long as it’s not an excessive amount. Drinking too much alcohol can make erectile dysfunction worse. 

When should vardenafil not be used? 

Vardenafil should only be taken by adult men. If you are under 18 or female, then you must not take this medicine. You must also not take vardenafil if you: 

  • You are allergic to vardenafil or any of the other ingredients of this medicine 

  • You are taking medicines containing nitrates, such as glycerol trinitrate for angina, or nitric oxide donors, such as amyl nitrite. 

  • You are taking ritonavir or indinavir, medicines used to treat HIV.

  • You are over 75 years of age and are taking ketoconazole or itraconazole, anti-fungal medicines.

  • You have a severe heart or liver problem.

  • You are having kidney dialysis. 

  • You have recently had a stroke or heart attack. 

  • You have or have had low blood pressure. 

  • Your family has a history of degenerative eye diseases (such as retinitis pigmentosa).

  • You have ever had a condition involving loss of vision due to damage to the optic nerve from insufficient blood supply known as non-arteritic ischemic optic neuropathy (NAION).

  • You are taking riociguat. This drug is used to treat pulmonary arterial hypertension (i.e., high blood pressure in the lungs) and chronic thromboembolic pulmonary hypertension (i.e., high blood pressure in the lungs secondary to blood clots). 

You should talk to your doctor or Chemist4U pharmacist for expert advice before taking vardenafil if: 

  • You are taking any other medicines or herbal remedies, including those obtained without a prescription.

  • If you have heart trouble.

  • If you suffer from irregular heartbeat (cardiac arrhythmia) or inherited heart diseases affecting your electrocardiogram. 

  • If you have a physical condition affecting the shape of the penis. This includes conditions called angulation, Peyronie’s disease and cavernosal fibrosis.

  • If you have an illness that can cause erections that won’t go away (priapism) These include sickle cell disease, multiple myeloma and leukaemia.

  • If you have stomach ulcers (also called gastric or peptic ulcers).

  • If you have a bleeding disorder (such as haemophilia).

  • If you are using any other treatments for erection difficulties.

Are there any side effects?

Like all medicines, there is the possibility of some unwanted side effects when taking vardenafil, but these won’t affect everyone. If you experience any symptoms of an allergic reaction (e.g. shortness of breath, swelling of the face, lips or throat) or sudden loss of vision in one or both eyes, seek urgent medical attention. 

Some serious side effects have occurred, mostly amongst men who already had heart problems before taking vardenafil. These include cases of sudden death, fast or altered heartbeat, heart attack, chest pain and trouble in cerebral circulation. 

Other, less serious, side effects may include: 

  • Headache

  • Dizziness

  • Flushing

  • Blocked or runny nose

  • Indigestion

For more information on uncommon, rare and very rare side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme

Do I need a prescription for vardenafil?

You do need a prescription for vardenafil in the UK. Our healthcare professionals can provide prescriptions if they think this treatment would be right for you and your condition. When you click the button which reads “Start Consultation” at the top of this page, you’ll see a short questionnaire set up by our healthcare team which is designed to help them understand your medical needs. Just like an in-person consultation with your GP, our doctors will assess your answers to their questions and write a prescription for the treatment they think will be best for you. You’ll then be able to pay for your medication and we’ll send it out to you quickly and in discreet packaging.

Storage information

Keep out of sight and reach of children. Do not use vardenafil after the expiry date, referring to the last day of the month stated on the packaging. 

Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.

Helpful Advice on Medication Restrictions & Addiction

For further information on our medication restrictions policy, please click here.

If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:

NHS Help & Advice on Drug Addiction

Talk To Frank - Drug Addiction Help & Support

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We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

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