If you are using any drugs that make you sleepy or slow your breathing, it may take you longer to recover from anesthesia with ketamine. This includes opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.
Other drugs may affect ketamine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.
 Ketamine drug interactions (more detail)
