Before using your Humulin N insulin, you need to make sure it’s ready for injection. Each time you use it, use a new needle. To mix the medication properly and make sure it’s evenly distributed in the vial, follow these steps:

• Hold the vial in your hands and gently roll it between your palms about ten times. This helps mix the medication and gets rid of any settling that might have happened.
• Turn the vial upside down about ten times as well. This further mixes the medication. But don’t shake the vial too hard.
• Your Humulin N insulin is ready for injection when it looks cloudy and white, without any visible particles or lumps.

Remember, always use a new needle each time you use your insulin for safety and effectiveness.