Vardenafil is an erectile dysfunction medication that increases blood flow to your penis, making it easier to get an erection hard enough for sex. It works within 30-70 minutes of taking it, and it's effective for around 70% of men who take it.

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Product details

Vardenafil is a prescription-only treatment for erectile dysfunction. It works by increasing the blood flow to your penis, which helps you to get and keep an erection. Vardenafil starts working within 30 minutes, can last for up to 6 hours, and is effective for around 70% of men.

Dr Babak Ashrafi Clinical Lead for Service Development

Medically reviewed by

Dr Babak Ashrafi

Last reviewed: 03 Feb 2021

Vardenafil prices

Pack Size Price
10 mg - 4 tablet(s) £30.00
10 mg - 8 tablet(s) £50.00
10 mg - 12 tablet(s) £70.00
10 mg - 16 tablet(s) £90.00
20 mg - 4 tablet(s) £35.00
20 mg - 8 tablet(s) £55.00
20 mg - 12 tablet(s) £80.00
20 mg - 16 tablet(s) £105.00
20 mg - 28 tablet(s) £260.00

How it Works

About Vardenafil

How to buy vardenafil

Can I buy vardenafil online?

Vardenafil is a prescription-only medication, which means it can only be legally prescribed and sold online by services such as Superdrug Online Doctor.

If you are going to buy vardenafil online, you should make sure that the seller is registered with the Care Quality Commission (CQC).

If you’re not sure if a company is registered with either the CQC, then they may be operating illegally, selling fake medicines, or prescribing incorrectly.

Important: When you order a generic (non-branded) medication, it may arrive in different packaging or under a different name to what’s pictured or what you expect. This is because we order from a variety of different suppliers to make sure you always have your medication available when you need it. The medication you receive will contain the same active ingredients and work in exactly the same way.

How vardenafil works

Vardenafil is:

  • a treatment for erectile dysfunction
  • the generic version of Levitra, and works in the same way
  • effective for around 70% of men

How does vardenafil work?

Vardenafil relaxes the blood vessels and muscles around your penis to increase blood flow. This increase in blood flow helps you to get and keep an erection as long as you’re sexually aroused.

How long does vardenafil last?

The effects of vardenafil usually last up to 4 hours but some men may experience the effects for up to 6. This is like other types of erectile dysfunction treatments like Viagra. Vardenafil also takes about 30 to 60 mins to start working.

How to take vardenafil

You should take vardenafil exactly how your doctor has told you to.

  • Take vardenafil around an hour before you intend to have sex
  • Swallow one tablet whole with a glass of water
  • Avoid eating heavy meals or drinking alcohol before taking it, as doing this can reduce its effectiveness and make it take longer to work
  • You should only take one tablet in a 24-hour period, taking more can cause serious side effects.
  • Do not take vardenafil with any other erectile dysfunction medication.

Vardenafil safety information

Vardenafil is available in a few different doses – 5mg, 10mg and 20mg. You should never increase your dose without a doctor’s advice. If you feel the effects of vardenafil are too strong or too weak for you, consult your doctor for advice.

Vardenafil 5mg

The 5mg doses of vardenafil are the lowest available and are usually prescribed to men who have experienced side effects on the higher doses.

These dosages of vardenafil are also suitable for men who are taking other medications or have health problems which make taking the higher doses unsafe. The lower doses also reduce the risk of drug interactions and side effects.

Vardenafil 10mg

The 10mg dose of vardenafil is usually what you will be prescribed if you are taking it for the first time. If you have a liver issue, you may be prescribed an even lower dose to begin with.

If you take 10mg and feel you need a higher or lower dose, your doctor will be able to discuss this with you.

Vardenafil 20mg

The maximum dose of vardenafil available is 20mg. This dose is normally given to you if you’ve tried 10mg, it didn’t work, and you didn’t experience any side effects.

If you take over 20mg of vardenafil then you are at risk of side effects and complications. If you try 20mg and find it doesn’t work, there are other ED treatments you can try.

Reviews of vardenafil

Patient reviews of vardenafil show it’s rated:

Vardenafil vs sildenafil

Vardenafil and sildenafil are very similar medications. They both start working in the same amount of time and last for the same duration. They also both come in 3 doses, standard, low, and high doses. Even though the doses are higher for sildenafil, it doesn’t mean the medication is stronger.

Both medications are effective and safe if approved by a doctor. If you want to buy Sildenafil medication over-the-counter from a pharmacy, you can buy Viagra Connect which contains sildenafil. You can’t buy any version of vardenafil over the counter. Other than this, we don’t recommend one over the other.

Vardenafil and sildenafil comparison

Vardenafil vs Sildenafil Vardenafil Sildenafil
How effective are they? 58-74% 74% rating 8.0 8.5
Branded version Levitra Viagra
Over the counter version? No Viagra Connect
Available in a daily dosage? No No
Available dosages 5mg, 10mg, and 20mg 25mg, 50mg, and 100mg
Standard starter dosage 10mg 50mg
How fast do they work? 30-60 mins 30-60 mins
How long do they last 4-6 hours 4-6 hours
Chance of side effects Less than 2% Less than 2%

Vardenafil safety information

As with other medications, vardenafil can cause side effects. Some medications can react with vardenafil, making them unsafe to take together. You should read the patient information leaflet that comes with your medication for vardenafil for full safety information.

Side effects

Less than 2% of people who use vardenafil will get side effects. Most side effects aren’t serious and if you get side effects you may not need to do anything about them unless you find them difficult to put up with or if they’re under the list of serious side effects below.

Common side effects (affect up to 1 in 10 people):

  • Headaches
  • Dizziness
  • Indigestion
  • Blocked or runny nose
  • Flushing

Uncommon side effects (affect up to 1 in 100 people):

  • Sleepiness
  • Sleep disorder
  • Swelling of skin, face, lips, or throat
  • Numbness
  • Vision problems
  • Fast heartbeat or pounding heart
  • Ringing in the ears
  • Vertigo
  • Breathlessness
  • Stuffy nose
  • Acid reflux
  • Diarrhoea
  • Abdominal pain
  • Nausea
  • Vomiting
  • Dry mouth
  • Skin rash or reddened skin
  • Back or muscle pain
  • Prolonged erections
  • Malaise

Rare side effects (affect up to 1 in 1,000 people):

  • Allergic reaction
  • Anxiety
  • Fainting
  • Amnesia
  • Seizures
  • Inflammation of the eye (conjunctivitis)
  • High or low blood pressure
  • Nose bleeds
  • Heart attack
  • Irregular heartbeat
  • Angina
  • Sensitivity of skin to sunlight
  • Chest pain
  • Painful erections
  • Temporarily reduced blood flow to the brain

Drug interactions

Some medications interact with vardenafil and can cause side effects. You should tell your doctor if you take or intend to take any of the following:

  • Angina medications
  • Nitrates
  • Nitric oxide donors like amyl nitrate
  • Arrhythmia medications or high blood pressure medications
  • Quinidine
  • Procainamide
  • Amiodarone
  • Sotalol
  • Riociguat
  • HIV medications
  • Ritonavir
  • Indinavir
  • Antifungal medications
  • Ketoconazole
  • Itraconazole
  • Certain antibiotics
  • Erythromycin
  • Clarithromycin
  • High blood pressure medications
  • Alpha blockers


Erectile Dysfunction. (2020) BAUS [Accessed 3rd February 2021]

Erectile Dysfunction. (2020) NHS [Accessed 3rd February 2021]

Phosphodiesterase-5 (PDE-5) Inhibitors. (2019) NICE [Accessed 3rd February 2021]

Sexual Problems. (2018) Sexwise [Accessed 3rd February 2021]

Vardenafil Patient Leaflet. (2020) EMC [Accessed 3rd February 2021]

Patient Reviews