Suggest Treatment For Lewy Body Dementia

My husband has been diagnosed with Lewy Body Dimentia. Currently he is suffering from severe muscle spasms foe which he has been prescribed Robaxin 500 mg 1 qid. This has helped the spasms a little, however he is in a significant amount of pain most of the time especially when trying to get from a lying position to a sitting position and from sitting to standing. He has increased difficulty walking. We are not awere of any injury. Today, he cannot get up without my assistance. I will be taking him back to his GP on Monday. He has been taking Tylenol 500 mg for pain, and this is not helping him. I am trying to research which pain relievers he can take with his Lewy Body condition, so I can discuss it with his doctor on Monday. Do you think Vicodin 300 or Norco 5/325 is a safe option for him? He does take Lipitor 40 mg once a day and other medications