Hi, From the details given, you are on Trazodone, an antidepressant, hydrocodone, an opioid and on Gabapentin, am anti-epileptic drugs. Trazodone is an antidepressant prescribed for insomnia you are suffering from. It controls the mood, anxiety by restoring the balance of the natural chemical in the brain, serotonin. It interacts with MAO inhibitors which enhance the effects of this drug. Hrdrocodone, an opioid analgesic used to relieve severe pain. Side effects of the drug are nausea, vomiting, drowsiness, dizziness, etc. Gabapentin is an antiepileptic drugs prescribed in seizures. Common side effects are drowsiness, dizziness, etc. Gabapentin and Hydrocodone intake may cause shallow breathing due to combined effect and also increased drowsiness and dizziness. So, consult your doctor regarding the change of medicines. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Pradeepraj, General & Family Physician