Post menopausal, bowel movement 4/week, but output is in small pieces. sometimes hard to pass. high fiber diet, exercise reg, water, norm colonoscopy

Should find a reason: A person with constipation needs to be sure there is no other disease causing it. If constipation is just due to slow movement of the food and poop through the gut, then the things to try are vegetables, water, prune juice, prunes, fiber+water, Miralax (polyethylene glycol) Senokot or other senna, milk of magnesia, or other laxatives... A doctor can evaluate, and also consider Linzess or Amitiza.