I have been on linzess for two weeks now low dose i have not had a real bm since i quit taking miralax doctor increased the linzess to double amount i am extremely constipated what do i do i have had a few water diearea but very little drink 8 gla?

You may have fecal impaction. You can try a saline or soap enema and if it does not work, you need manual extraction. If Miralax is effective you can use it as needed for two, three times a week but you need to take stool softener daily, docusate 100 mg, twice a day. Linzess is not always effective. Eight glasses of water is more than enough, you need to increase fiber intake and daily exercise.

Fluids. Eat a high fiber diet between 20-25 grams per day, regular meal times and drink 80-100 oz of caffeine free alcohol free fluids daily. If you exercise and should add 20 oz per 30 minutes of strenuous exercise. Some meds contribute to constipation so take the meds with full glass of fluid instead of a sip in addition to the above recommended fluids.