Cold sores (also called fever blisters) are small, fluid-filled blisters that usually appear on or around the lips. They’re caused by the herpes simplex virus (HSV) and are contagious, particularly while blistering or weeping. Many outbreaks start with a tingle, itch, or tight feeling before the skin breaks. That’s why most people shop for cold sore treatments that are easy to use early, help protect the sore day-to-day, and support comfort while it heals.
In this category you can buy trusted pharmacy options in the formats people use most: aciclovir cold sore creams (including hygienic pump and classic tube designs), invisible cold sore patches you can wear under makeup, and soothing gels for discomfort. WithAid is a UK based and regulated pharmacy with a Responsible Pharmacist, and orders are sent Royal Mail in discreet packaging, with fast, free delivery on orders over £20. Choose a format you’ll use consistently and follow the instructions on-pack.
Shop by cold sores type
Popular types of cold sore products
- Aciclovir antiviral creams: a common choice for cold sores on the lips and face
- Docosanol creams: an alternative antiviral ingredient some people prefer
- Invisible patches: protective barrier patches designed for discreet wear
- Cold sore gels: soothing gels that can help with discomfort and tightness
- Oral pain gels: for sore spots in and around the mouth (read the label carefully)
How to choose the right option
- Use it early: many options are intended for the first tingle, itch, or tight feeling.
- Pick a format that suits your routine: cream for regular reapplication, a patch for hands-free coverage, or a gel for soothing comfort.
- Choose your application style: pumps can feel quicker and more hygienic; tubes may be easier to carry and reapply.
- Apply hygienically: use clean hands (or a cotton bud) and wash hands after applying.
- Check where it’s suitable: some products are for lips/face only, while mouth gels may have different directions and age limits.
- Reduce spread risk: avoid kissing or oral sex during an active cold sore, and don’t share lip products, towels, or cutlery.
Quick links: common needs
FAQs
What causes cold sores?
Cold sores are caused by the herpes simplex virus (often HSV-1). After the first infection, the virus can reactivate from time to time. Common triggers include stress, tiredness, illness, and sun exposure.
When should I start using cold sore cream?
Most cold sore creams are designed to be applied at the earliest sign, such as tingling, itching, or tightness. Follow the label instructions for how often to apply and how long to use the product.
Which is better: a cold sore pump or tube?
Both formats can be suitable when used as directed. A pump can feel quick and hygienic for frequent use, while a tube is a familiar option for reapplying through the day. Choose the format you’ll use consistently.
Do invisible cold sore patches help?
Patches create a protective barrier over the cold sore, which may help reduce friction from talking and eating and keep the area covered. They can also be a discreet option under lipstick or makeup. Use as directed and replace as recommended.
How long are cold sores contagious?
Cold sores can spread the virus, especially while blistering or weeping, and the risk usually reduces as the area dries and heals. To reduce transmission risk, avoid close contact with the sore and follow hygiene advice until fully healed.
Cold sore or mouth ulcer — how can I tell?
Cold sores usually appear on or around the lips and often start with tingling before blistering. Mouth ulcers are typically inside the mouth and look like a sore with a pale centre and red edge. If you’re unsure or symptoms are unusual, ask a pharmacist for advice.
When should I speak to a pharmacist, GP, or NHS 111?
Get advice if cold sores are severe, frequent, spreading, or not starting to improve within around 10 days, or if you have a weakened immune system. Seek urgent help for symptoms involving the eye (eye pain, a red eye that’s getting worse, blurred vision, or light sensitivity) or signs of a serious allergic reaction.
Important: This page is for general guidance and does not replace personalised medical advice. Always read the label and follow directions. Do not exceed stated doses. If symptoms are severe, unusual, involve the eye, or you’re immunocompromised, speak to a pharmacist, GP, or NHS 111 promptly.
