Long term antiviral medication, known as suppressive therapy, is available on the NHS for individuals who experience frequent or particularly distressing recurrences of the herpes simplex virus. While many people manage occasional outbreaks with short courses of medication, some require a continuous daily dose to keep the virus in a dormant state. GPs and sexual health clinicians follow specific national guidelines to determine which patients will benefit most from this systemic approach based on the clinical history of their skin condition.
What We’ll Discuss in This Article
- Clinical eligibility for daily suppressive management.
- How long term antivirals work to prevent skin lesions.
- The process for requesting a specialist review.
- Potential side effects of long term antiviral use.
- How the NHS monitors patients on continuous medication.
- When suppressive therapy might be paused or reviewed.
Eligibility for long term suppressive therapy
The NHS typically considers suppressive therapy for individuals who experience six or more recurrences of genital herpes in a single year. This threshold is used to identify those whose quality of life or skin health is significantly impacted by the frequency of the virus reactivating. The NHS notes that if you have more than six outbreaks of genital herpes in a year, a GP or specialist may prescribe a daily antiviral tablet to prevent further recurrences. The decision is also based on the severity of each flare, such as if the outbreaks cause significant pain, extensive blistering, or systemic symptoms like fever and malaise.
How suppressive medication protects the skin
Daily antiviral tablets, such as aciclovir or valaciclovir, work by continuously inhibiting the replication process of the herpes simplex virus. By maintaining a steady level of the medication in the bloodstream, the virus is prevented from multiplying even when it tries to reactivate and move toward the skin surface. According to the NICE clinical knowledge summaries, suppressive therapy is highly effective at reducing both the frequency of visible outbreaks and the amount of asymptomatic viral shedding. This continuous protection allows the skin barrier to remain intact for much longer periods and significantly reduces the physical discomfort associated with frequent flares.
Requesting a review for frequent recurrences
If you find that your outbreaks are frequent or difficult to manage with episodic care, you should request a clinical review at your GP surgery or a local sexual health clinic. During this appointment, the healthcare professional will ask you to provide a history of your outbreaks, including how often they occur and how they respond to standard management. They may also review any previous swab results to confirm which strain of the virus you carry. Providing an accurate record of your symptoms over several months helps the clinician determine if you meet the criteria for moving to a long term prescription.
Monitoring and safety of long term use
Patients who are prescribed long term antiviral medication on the NHS are typically reviewed every six to twelve months to ensure the management remains effective and safe. While these medications are generally well tolerated, the GP may perform periodic blood tests to monitor kidney function, as the kidneys are responsible for clearing the medicine from the body. Most people find that any initial mild side effects, such as headaches or nausea, subside as their body adjusts to the daily dose. Staying well hydrated is an important part of the routine for anyone taking these systemic medications over a long period.
Pausing or adjusting the management plan
Suppressive therapy is not necessarily a permanent requirement, and the NHS guidelines often suggest a trial period of stopping the medication after a year of successful suppression. This allows the clinician and the patient to see if the body’s own immune system has become more effective at controlling the virus naturally. If the outbreaks return frequently after stopping, the medication can be restarted. This flexible approach ensures that the patient is not taking systemic medication for longer than is clinically necessary while still providing the protection needed to maintain healthy skin and a good quality of life.
Conclusion
Long term antiviral tablets are a standard part of NHS care for those who experience frequent or severe recurrences of the herpes simplex virus. By suppressing the virus daily, these medications provide a powerful tool for maintaining skin integrity and reducing the physical and psychological burden of the condition. Clinical reviews ensure that the management is tailored to the individual’s needs and monitored for safety. If you experience severe, sudden, or worsening symptoms, call 999 immediately.
Can I get long term antivirals for cold sores on my face?
Yes, while more common for genital herpes, a GP can prescribe suppressive therapy for very frequent or severe facial cold sores if they impact your health.
Do I have to pay for these prescriptions every month?
Standard NHS prescription charges apply unless you are eligible for free prescriptions; a Prescription Prepayment Certificate may save you money if you need them monthly.
Will the tablets stop me from ever having another outbreak?
While highly effective, some people may still experience an occasional mild outbreak while on suppressive therapy, often referred to as a breakthrough flare.
Can I start and stop suppressive therapy whenever I want?
It is important to follow the clinical plan provided by your doctor, as stopping and starting can affect how well the virus is suppressed.
Do these tablets protect my partner from catching the virus?
Suppressive therapy reduces viral shedding and significantly lowers the risk of transmission, but it does not eliminate the risk entirely.
Can I take these tablets for many years safely?
Many people take suppressive antivirals for several years under medical supervision without experiencing any significant long term health issues.
What happens if I forget to take my daily tablet?
You should take the missed dose as soon as you remember, but if it is nearly time for your next dose, skip the missed one and continue your normal routine.
Authority Snapshot (E-E-A-T)
This article provides evidence-based health information for the UK public, reviewed by Dr. Stefan Petrov, a UK-trained physician with an MBBS and postgraduate certifications in ACLS, BLS, and the PLAB. Dr. Petrov has extensive clinical experience across general medicine, surgery, and emergency care, having worked in hospital wards and intensive care units. All content is strictly aligned with NHS and NICE clinical standards to ensure accuracy and patient safety.
