You are already taking Pregabalin 75 mg and Alprazolam 0.25 mg, both of which can cause drowsiness, dizziness, and sedation. Adding Dibenpan on your own is not recommended, and you should not self-medicate, as it can increase these effects and raise the risk of excessive sleepiness, unsteadiness, or falls. So, do not take any other medication, including this, unless advised by your doctor.