I m worried about my husbands problem trying to sleep. He wakes up feeling like something is crawling on him. Or wakes up thinking he heard something crash, or me calling for him. He has nightmares. This has been going on for over a year but started getting worse the last few months. It started when he had a 2nd stent put in and they changed his meds. He takes Atorvastatin 20mg, Dicyclomine10mg, Metoprolol 25mg,Clopidogrel 75mg, Lisinopril 5mg, Bayer aspirin 81mg, and Omeprazole 20mg. He also takes Potassium 99mg,and Magnesium 250mg. Can it be caused by a drug interaction? He also suffers from minor mood swings.