Calactodryl Lotion is a prescription medicine used to treat allergic skin conditions. It works by blocking the effects of a chemical messenger (histamine), and provide relief from symptoms of skin allergy such as skin irritation. Calactodryl Lotion should be used in the dose and duration as advised by your doctor. Wash your hands before using this medicine. It is advised to check the label for directions before use. It is for external use only. Do not use this medicine more than the recommended dose. Inform your doctor if you have known allergies to this medicine. This medicine is generally safe to use and has minimal or no side effects. However, if you experience rashes or itching or any other symptoms which you think are because of this medicine, please consult your doctor. Inform your doctor if you are pregnant or breastfeeding or are suffering from any other disease.