Cold sore treatment online UK: tablets, creams and when to treat
How to treat cold sores online in the UK — antiviral tablets at the first tingle, recurrent outbreak plans and when you need in-person care.
Cold sores (oral herpes simplex) affect most adults. They are contagious, recurrent and treatable — but timing matters.
When to start treatment
Antiviral tablets work best within 24 hours of the first tingling or burning — before the blister appears. Once crusted, tablets help less but may still shorten healing.
Online vs pharmacy options
Pharmacy creams (aciclovir 5%) suit mild occasional outbreaks. Prescription oral antivirals are stronger and better for frequent or severe episodes — supplied after online assessment at regulated clinics.
Recurrent cold sores
If you get more than six outbreaks a year, ask about daily suppressive treatment — one tablet daily to reduce frequency. This needs prescriber review and periodic reassessment.
When not to use online care
- Cold sores near the eye
- Spreading redness with fever
- First-ever severe outbreak in a young child
- Weakened immune system
These need urgent in-person assessment.
Frequently asked questions
Can I get cold sore treatment online in the UK?
Yes — prescription antiviral tablets and creams for cold sores (herpes simplex) can be supplied online after assessment when clinically appropriate.
Should I take tablets or use cream for cold sores?
Oral antiviral tablets work best when taken at the first tingle before the blister fully forms. Creams help mild or occasional outbreaks. Frequent recurrences may need daily suppressive tablets.
How fast do cold sore tablets work?
Starting antivirals within 24 hours of the first symptoms shortens healing by about one day on average and reduces severity.
Are cold sores the same as genital herpes?
Both are caused by herpes simplex virus but different strains often prefer mouth or genitals. Treatment is similar but assessment and advice differ — do not assume the same product suits both without review.
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