Father suffers from alzheimers- has a laceration on toe that required a few sutures. Was put on 2 Bactrim DS twice a day --2 pills every 12 hours. Been taking them for 3-1/2 days. (has taken 15 pills) More confused today. Wondering if this antibiotic is causing this. May be too strong for him? Has anyone else experienced this with an antibiotic?