What can be done to keep cough drops from getting sticky when you have them a while?

To prevent cough drops from becoming sticky, store them in a cool, dry place and in an airtight container to minimize moisture exposure. You can also place a small packet of silica gel in the container to absorb excess humidity. Additionally, keeping the cough drops wrapped until you're ready to use them can help maintain their texture. Finally, consider using a dusting of cornstarch or powdered sugar on the drops to reduce stickiness.