Lysine can also be applied topically, directly to the cold sore, to speed up healing time. Like vitamin C, Zinc is an immune system booster. In this study, participants were treated topically with ...

cough and sore throat. Many people online recommend taking zinc supplements to fight off colds, claiming they can prevent illness, shorten the duration of a cold or reduce the severity of your ...

Having a cold sore can be painful and irritating ... cruciferous vegetables) and zinc (legumes, nuts and seeds),” Shand says. Plus, you could add in a multi-nutrient supplement, such as Wild ...

With cold and flu season in ... cough and sore throat. Claims like these have led multiple readers, including Sandra, to ask whether zinc supplements really provide these benefits.