How much rapid-acting insulin does the CeQur Simplicity patch hold?

The CeQur Simplicity wearable insulin patch holds a maximum of 200 units of rapid-acting insulin and requires a minimum fill of 100 units. Twenty units of insulin are required to prep and prime each patch, leaving 180 units of usable insulin. If more than 180 units of insulin are required, you can replace your CeQur Simplicity wearable insulin patch in less than four days.