Hello im male 38 I take methadone maintenance daily 45mls other meds propranolol 60mg, quetiapine 75mg, prozac 20mg,diazepam 6mg, vitamin B and thiamine I m finding it hard to sleep at night would taking a small amount of promethazine (Sominex) half a tablet to try help me sleep? I m pretty used to my regular medication & I m weening of diazepam so working towards just taking just the propranolol which has seriously helped my horrible panic attacks & anxiety disorder, the quetiapine is for severe depression with the glycerine(prozac) I panic easy so will taking half a Sominex (promethazine) be ok?? or it could make me have a panic attack!! I fall asleep but wake up every hour!! Thank you if u can advise me. Mike