Hi thanks for contacting health care magic..... First follow the below advise to relieve constipation considering first as functional... Along with laxative like psyllium in milk take high fiber foods like whole grain , wheat bran , carrot , apple etc.... Drink more water daily.... Fruits taken more... Kiwi is good fruit for defective digestion as contain pepsin ,vitamin c , pottasium , linolenic acid etc.... Cucumber also good as contain erepsin. Beet and avocados rich in fiber.so taken. Avoid stress and smoking.... Gas forming food not taken like onion , turnip , cabbage , broccoli etc.... Do regular exercise. If still problem colonoscopy or USG needs to done to rule out organic cause. Take care. Dr.Parth