Cetrilak Mild 5% Solution, 100ml Instructions for Use Before and after using this medication, thoroughly wash your hands. Cetrilak Mild 5% solution should be diluted with water before use. Do not use if you are allergic to cetrimide or sodium chlorite. Follow all directions on your prescription label. Do not use more than recommended on your prescription label. If you have any questions about how to use your medicine properly, ask your doctor or pharmacist. If you miss a dose of cetrilak mild, take it as soon as possible. However, if it is more than 24 hours since your last dose, contact your doctor. Do not stop taking cetrilak mild without first talking to your doctor. Doing so may increase your risk of seizures if you're already at risk for having them. Seek immediate medical help if you experience any of the following symptoms: difficult breathing; pain or pressure in the chest; swelling of the mouth, face, neck, or tongue. Store cetrilak mild at room temperature away from moisture and heat. Keep track of what you inject into your body by keeping all of your injection records. These records include the name, date, time, and location of each injection.