Cold sore care kit To purchase Cold sore care kit and other homeopathic remedies online, please click the button above. 3 selected remedies for Stinging at Pre-Blister Stage, Cold Sore at crust stage and Pain at blister stage This kit contains the following 3 remedies by Boiron: 1. Rhus Toxicodendron (6C) 2. Apis Mellifica (30C) 3. Mezereum (30C) Cold sore care kit is available to buy through our online shop from Boiron in USA, by clicking the red 'View Purchase Options' button.. Adding this remedy to your basket will empty all other items, as all items have to be from one supplier. Alternative names, keywords, and common mis-spellings Rhus Toxicodendron, Apis Mellifica, Mezereum