Cold Sores

Consult your healthcare professional if:

  • Cold sores develop near the eyes or on eyes 
  • You develop a high fever or chills 
  • Your sores are very painful
Cold Sores


  • Itching or tingling of the skin in the affected area (normally the lips) - this may precede the appearance of the cold sore 
  • One or many clusters of small blisters forming over inflamed skin and filled with a yellowish or white fluid 
  • Red, painful sores on or near the mouth and lips, or on fingers 
  • Swollen, sensitive gums of a deep red colour 
  • A fever and/or flu-like symptoms


Cold sores are caused by the Herpes simplex virus, which is transmitted by contact such as kissing an infected person or sharing eating utensils. 

The virus may lie dormant in the body for years, sometimes without causing any symptoms, only to be activated during periods of low immune status, stress, exposure to cold, and sunburn. Some women also find that menstruation can trigger cold sores.

Natural Therapies

The amino acid L-lysine helps to reduce the frequency and severity of cold sore outbreaks
Zinc, Echinacea and Vitamin C help to keep the immune system strong, and help to fight the Herpes virus

Life Style Factors

The Herpes virus is made stronger by the amino acid L-arginine and weaker by L-lysine. Avoid foods rich in L-arginine (such as nuts, chocolate, carob, coconut, soya beans and oats). At the same time, increase foods high in L-lysine, (such as kidney beans, split peas, fish, lamb, milk, cheese and sprouts), and consider taking an L-lysine supplement.

Stress can be a trigger for cold sore outbreak - if you are getting lots of cold sores your stress levels may be to blame - look for ways to cope better.


Hygiene is an important factor in cold sore prevention. Be careful not to kiss someone who has a cold sore, or use the same utensils, towels, or razors. Always wash your hands after touching a cold sore, and be sure not to touch your eyes or genitals after touching your cold sore. 

If you know that sun exposure is a trigger for cold sore outbreak in you, be very careful to avoid the sun.

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