Even if you aren’t taking any medications right now, it might make sense to enroll in a drug plan so that you have coverage in case your needs change in the future.
If you don’t sign up for prescription drug coverage when you are first eligible, you won’t be able to sign up until the next Medicare Annual Election period begins, and your coverage wouldn’t take effect until January 1 of the following year. This could put you at risk of paying a lot out of pocket for prescriptions if your needs change.
Also, be aware that there is a late enrollment penalty for Part D. If you don’t sign up for a Part D plan when you are first eligible to do so, and you decide later you want to sign up, you will be required to pay a late enrollment penalty equal to 1% of the national average premium amount for every month you didn’t have coverage as good as the standard Part D benefit.