Quick Reference: First Signs & Treatment Options
Recognising Early Cold Sore Symptoms
Cold sores inside the mouth typically begin with a tingling, burning, or itching sensation before visible blisters appear. This prodromal stage usually lasts 1-2 days and represents the optimal window for starting treatment. Other early warning signs include localised pain, sensitivity, or a feeling of tightness around the affected area.
Immediate Treatment Steps
When you notice the first symptoms, immediate action can make a significant difference to outbreak severity. Topical aciclovir 5% cream should be applied every 4 hours (5 times daily) starting at the first sign of tingling. For cold sores inside the mouth, oral antiviral medication may be more practical than topical treatments.
Oral Antiviral Options
Aciclovir 400mg tablets taken three times daily for 5 days can help reduce healing time when started early. Valaciclovir 500mg twice daily for 3 days offers an alternative with less frequent dosing. EverydayMeds stocks both aciclovir and valaciclovir tablets, which require a prescription and online consultation.
Managing Symptoms
Pain relief can be achieved with paracetamol or ibuprofen as needed. Cold compresses may help reduce swelling and discomfort. Avoid acidic or spicy foods that could irritate the affected area. Drinking through a straw might help when cold sores affect the inside of the mouth.
Prevention of Spread
Cold sores are highly contagious, particularly during the blister and weeping stages. Wash hands frequently, avoid sharing utensils or lip products, and refrain from kissing or oral contact until lesions have completely healed. The virus can be transmitted even when no visible symptoms are present.






