My husband is having severe neck spasms. He has never had anything like this before that lasted all day. He has tried some analgesic this morning, heat, ice, etc. At 4PM, he took 5 mg of Diazepam that was ordered for muscle spasms from his back surgery. At 8:45 PM, he took 10mg of Diazepam, still with little relief. Upon any movement he gets spasms to the left side of his neck with no radiation. Can I give him a Hydrocodone/acetaminophen 5-325 to supplement the diazepam?