Drug Interactions between Duzallo and eszopiclone

Allopurinol may cause sedation, drowsiness, dizziness, and impaired driving ability. The risk and/or severity may be increased when combined with alcohol or other medications that can also cause sedation. Let your doctor know prior to receiving allopurinol if you are currently using alcohol or receiving treatment with eszopiclone, as you may be more likely to experience sedation-related side effects. Do not drive, operate machinery, or engage in potentially hazardous activities requiring mental alertness and motor coordination until the sedative effects have gone away and you know how these medications affect you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of zopiclone, which is a substrate of the isoenzyme. According to product labeling, zopiclone systemic exposure (AUC) was decreased 80% by concomitant use of rifampin, a potent inducer of CYP450 3A4. A similar effect would be expected with eszopiclone, the S-enantiomer of zopiclone. Pharmacodynamically, many CYP450 3A4 inducers such as barbiturates and anticonvulsants have CNS-depressant effects, which may be additive with those of zopiclone and eszopiclone.

MANAGEMENT: Pharmacologic response to zopiclone and eszopiclone should be monitored more closely whenever a CYP450 3A4 inducer is added to or withdrawn from therapy, and the hypnotic dosage adjusted if necessary.