Prevention or avoidance of being infected by cold sores is the best remedy for cold sores. Cold sores are not new infections. They have existed for ages and there is always the need to treat them when one experiences an infection. In almost every case, you have heard about one form of medication or the other. With a plethora of treatment available, why is there still a prevalence of cold sores? The answer should lie in prevention. This just confirms that fact that there is no real cure for cold sores. For this reason, you should avoid situations that cause infections by the cold sore virus. Avoid being exposed to sunlight, stress and anxiety if you already have the virus.