| A | B |
| Alimentary tract= | Gastrointestinal tract |
| Gallbladder (bile) | Needed for lipid digestion |
| Drugs causing Constipation | Nacotics, anticholinergics, diuretics, iron |
| Bulk laxatives | May result if not taken with adequate amounts of fluids |
| Stimulants | Irritate bowel, more likely to cause diarrhea and cramping |
| senna (Senokot) | Stimulant |
| bisacodyl (Dulcolax) | Stimulant, available PO and rectal |
| psyllium mucilloid (Metamucil) | Bulk type laxative |
| polyethylene glycol-electrolyte (Osmotic) | Golytely, Miralax |
| docusate (Colace) | Stool softener, often used to prevent constipation |
| Lactulose | Also used to decrease serum ammonia levels |
| diphenoxylate with atropine (Lomotil) | Antidiarrheal |
| H-pylori | Main cause of PUD |
| H2 receptor blocker | ranitidine (Zantac) |
| omeprazole (Prilosec) | Proton-pump inhibitor |