Anything to take to get more energy.

Go to your doctor to see if there are alternatives to your current medication (or if you can lower the dosage to compensate for this possible listlessness due to your current prescription).

Don't take chances and start taking any supplements or whatever that may actually interact badly with your current prescription.

You must take enough protein daily to get some energy boost. Eat eggs, meat and also drink milk to boost your energy level.
Hope it helps!