Valif 20 is a PDE5 inhibitor available only on prescription. By acting on the PDE5 enzyme to enhance blood flow to the penis, Vardenafil — the active ingredient in Valif 20 — has become a well-established treatment for erectile dysfunction in adult men. It is generally taken around one hour prior to sexual activity.
Many men who receive a prescription for Valif 20 want to understand what the medicine does and how it works in practice. Developed with Vardenafil as its principal active compound, Valif 20 targets erectile dysfunction at a physiological level, offering a clinically evidenced treatment pathway for affected men.
A condition affecting a considerable number of men throughout the UK, erectile dysfunction has meaningful consequences for both confidence and quality of life. A number of clinically proven, licensed treatment options are currently accessible.
You may notice different brand names for Vardenafil at UK pharmacies. Waymade 20 is one example of a UK reference brand containing the same active ingredient. Always use the brand your doctor or pharmacist has dispensed.
What Is Valif 20?
Valif 20 is a prescription-only medicine (POM) containing 20mg of Vardenafil. It is a phosphodiesterase-5 (PDE5) inhibitor.
Prescribed exclusively for adult men, Valif 20 supports those who find it difficult to achieve or maintain an erection during sexual activity.
It is available as a tablet.
The active ingredient is Vardenafil.
This medicine is only available on prescription.
Your doctor will assess your suitability before prescribing it. You should not obtain this medicine without a valid UK prescription.
| Field | Details |
|---|---|
| Drug class | Phosphodiesterase-5 (PDE5) inhibitor |
| Active ingredient | Vardenafil |
| Strength | 20mg |
| Prescription status | Prescription-only medicine (POM) |
| Therapeutic use | Treatment of erectile dysfunction in adult men |
| UK reference brand | Waymade 20 |
| Not recommended for | Women and children under 18 years |
How Vardenafil Works in the Body
During sexual stimulation, an adequate supply of blood to the penis is required to produce an erection. When this supply is insufficient, erectile dysfunction may occur.
Vardenafil helps to address this at a cellular level.
Vardenafil inhibits the PDE5 enzyme.
Because cGMP — a chemical that would ordinarily be broken down by PDE5 — is allowed to accumulate when the enzyme is blocked, smooth muscle tissue within the penis relaxes.
This causes the blood vessels within the penis to dilate.
Increased blood flow then supports an erection.
Importantly, Vardenafil only works in response to sexual stimulation.
Sexual stimulation remains a necessary condition for the medicine to take effect, as an erection is not produced in its absence.
The medicine typically begins to act within 10 minutes of taking a dose.
When Doctors Prescribe Valif 20
UK doctors prescribe Valif 20 specifically to treat erectile dysfunction in adult men — referred to clinically as impotence, a condition in which the capacity to achieve or maintain an erection during sexual activity is lost or impaired.
Both physical and psychological causes may contribute to the condition.
Amongst the physical causes most commonly identified are:
- Diabetes
- High blood pressure
- Cardiovascular disease
Psychological factors include:
- Stress
- Anxiety
- Depression
Doctors may prescribe Valif 20 after ruling out other treatments or adjusting lifestyle factors.
They will also review any other medicines you are taking before prescribing Vardenafil.
Learn more about available Vardenafil and erectile dysfunction treatment options.
Benefits of Valif 20
Valif 20 can provide reliable support for men with erectile dysfunction. Clinical evidence supports the effectiveness of Vardenafil across a wide range of patient groups.
Because the medicine may begin working within 10 minutes, it is a suitable choice for many men, with effects potentially lasting for up to 24 hours following a single dose. Because men with long-term conditions such as diabetes and high blood pressure have been represented in clinical studies of Vardenafil, its effectiveness across these groups has been demonstrated.
Using an effective treatment can support confidence and emotional wellbeing. Improved sexual function can positively affect relationships and overall quality of life. Treatment should always be reviewed regularly with your prescribing doctor.
Alternative Medicine Doctors May Consider
Several PDE5 inhibitors are currently licensed for use in the UK. Depending on a patient’s clinical history and preferences, a doctor may determine that an alternative medicine within this class is more suitable.
- Sildenafil (Viagra) is the most widely recognised PDE5 inhibitor and is typically taken 30–60 minutes before sexual activity.
- Tadalafil (Cialis) is available as a daily or on-demand dose; effects may last up to 36 hours
- Avanafil (Spedra), a newer PDE5 inhibitor, may act more quickly than some alternatives
Each medicine has a slightly different pharmacological profile. A doctor’s recommendation will take into account the patient’s clinical background, current medicines, and individual preferences. See available treatment options for erectile dysfunction.
Possible Side Effects
Not everyone will be affected, and in the majority of cases they are mild and resolve on their own.
| Category | Side Effect |
|---|---|
| Common Side Effects | Headache |
| Dizziness | |
| Indigestion | |
| Flushing | |
| Runny nose | |
| Nausea | |
| Less Common Side Effects | Sleepiness or fatigue |
| Dry mouth | |
| Skin rash | |
| Eye pain or discomfort | |
| Ringing in the ears (tinnitus) | |
| Fast or irregular heartbeat | |
| Breathlessness | |
| Diarrhoea | |
| Serious Side Effects — Seek Urgent Medical Attention | Prolonged or painful erection lasting more than four hours (priapism) |
| Sudden loss or reduction of vision in one or both eyes | |
| Sudden reduction or loss of hearing | |
| Chest pain or signs of a heart attack |
Where a severe allergic reaction occurs — characterised by swelling of the face, lips, tongue or throat and difficulty breathing — emergency medical assistance must be sought without delay
Important Safety Advice
Medicines That Must Not Be Used With Valif 20
Nitrates such as glycerol trinitrate and amyl nitrite — medicines often prescribed for angina — must not be taken with Valif 20, as combined use can cause a dangerous drop in blood pressure.
Because the combination significantly increases the risk of low blood pressure, Riociguat, used to treat pulmonary arterial hypertension, must also not be taken alongside Vardenafil
Medicines That May Interact
- Antihypertensives (blood pressure medicines) — increased risk of low blood pressure
- Antifungals such as itraconazole and ketoconazole — may raise Vardenafil levels in the blood
- HIV medicines such as ritonavir and indinavir may affect the metabolism of Vardenafil
- Antibiotics such as clarithromycin may increase Vardenafil concentration
- Heart rhythm medicines such as amiodarone, quinidine, and procainamide — increased risk of irregular heartbeat
- Antiretroviral efavirenz may alter drug levels
Tell your doctor if you have or have had any of the following:
- Heart disease or a recent heart attack
- Recent stroke
- Low blood pressure (hypotension)
- Severe kidney or liver impairment
- A history of blood clots or heart problems
- History of vision loss in one eye (non-arteritic anterior ischaemic optic neuropathy, NAION)
- Retinitis pigmentosa (a rare eye condition)
- History of seizures
- Hearing problems
Conditions associated with prolonged erections (such as sickle cell anaemia, leukaemia, or penile deformity)
Alcohol
Alcohol consumption can intensify the blood pressure-lowering effects of Valif 20 and worsen symptoms such as dizziness, lightheadedness, and fainting, which is why you should limit or avoid alcohol whilst using this medicine. Because grapefruit juice can raise the absorption of Vardenafil — amplifying both its intended effects and its side effects — it should be avoided throughout the course of treatment.
Driving and Operating Machinery
Valif 20 may cause dizziness or drowsiness. Wait until any such symptoms pass.
Pregnancy and Breastfeeding
Valif 20 is not recommended for women. It is prescribed only for adult men with erectile dysfunction.
When Should You Speak to a Doctor?
Contact your GP if you notice side effects that persist or worsen after taking Valif 20. Because a prolonged erection lasting more than four hours constitutes a medical emergency — with the potential to cause permanent damage if left untreated — immediate medical help must be sought if this occurs.
Any changes in vision or hearing should be reported to your doctor without delay, as they may point to a rare but serious reaction.
- Severe chest pain or signs of a heart attack
- Sudden vision or hearing changes
- Difficulty breathing or severe swelling
- Erection lasting longer than four hours
- Suspected allergic reaction
Can Valif 20 Be Used With Other Medicines?
Vardenafil has several clinically significant interactions, meaning that a full disclosure of all current medicines — including over-the-counter products, vitamins, and herbal supplements — is essential before treatment begins.
Your pharmacist can also provide guidance on potential interactions. Never adjust your dose or begin new medicines without first seeking advice from a qualified professional.
Storage and Handling Advice
- Keep at room temperature, below 25°C.
- Store away from direct sunlight and moisture.
- Keep in the original packaging until use. Keep all medicines out of the sight and reach of children.
- Do not use after the expiry date printed on the packaging.
- Do not dispose of medicines in household waste. Return unused tablets to your pharmacy.
Responsible Access to Treatment in the UK
You must obtain medicine with a valid prescription from a registered healthcare professional.
Always obtain this medicine from a regulated UK pharmacy, whether in person or online. Unregulated sources may supply counterfeit or substandard products, which can be dangerous.
FAQs
Q: What is the use of Valif 20?
A: Valif 20 contains Vardenafil 20mg and is prescribed to address erectile dysfunction in adult men by improving blood flow to the penis. Classified as a prescription-only medicine in the UK, it is obtainable only through a registered healthcare professional.
Q: Is vardenafil better than Viagra?
A: Vardenafil and Sildenafil (Viagra) are both PDE5 inhibitors prescribed for erectile dysfunction, each with a distinct pharmacological profile. Vardenafil may act more quickly for some men. Your doctor will advise which medicine suits you best.
Q: Is vardenafil harmful?
A: Because side effects such as headache and dizziness are generally mild and resolve on their own, Vardenafil is considered well tolerated when used under proper medical supervision. Always consult a UK-registered doctor before use.
Q: Is vardenafil used for erectile dysfunction?
A: As a licensed PDE5 inhibitor, Vardenafil is indicated specifically for erectile dysfunction in adult men. It acts by enhancing blood flow to the penis in response to sexual stimulation.
Conclusion
Formulated as a prescription-only PDE5 inhibitor, Valif 20 is indicated for the treatment of erectile dysfunction in adult men across the UK, working by improving blood flow to the penis during sexual stimulation. Clinical evidence supports its effectiveness across a range of patient groups. Because ongoing medical supervision is essential to safe treatment, the medicine’s important contraindications and drug interactions must be carefully assessed before and during use. Your doctor will advise whether it is suitable and appropriate for your circumstances. Concerns about this medicine should be raised with your GP or pharmacist.
References
- NHS. Erectile Dysfunction (Impotence). Available at: www.nhs.uk
- NICE. Erectile Dysfunction Clinical Guidance. Available at: www.nice.org.uk
- MHRA. Vardenafil Hydrochloride
Medical Disclaimer
This article is for informational purposes only and does not replace professional medical advice. Always consult a registered healthcare professional before starting or changing any treatment.