Microgenics Cold Sore Defence in 60 capsules is likely a dietary supplement designed to support the immune system and help reduce the frequency and severity of cold sores (also known as oral herpes outbreaks). These supplements often contain ingredients believed to have antiviral properties or that support immune function. Common ingredients in products aimed at cold sore defense might include Lysine, an amino acid known to inhibit the replication of the herpes simplex virus responsible for cold sores. Additionally, supplements might contain ingredients like zinc, vitamin C, or herbal extracts, which are believed to support immune health. As with any supplement, it's essential to follow the recommended dosage on the packaging and consult with a healthcare professional before starting a new regimen, especially if you have specific health conditions or are taking medications. This ensures the supplement is safe and suitable for your individual needs.