1 Amitiza (lubiprostone). 2  Amitiza, is approved by the FDA for the treatment of chronic constipation from an unknown cause (not constipation due to another condition or treatment). 3  Amitiza softens the stool by increasing its water content, so the stool can pass easily.4  This medication is taken twice daily with food.rescription Drugs to Treat Constipation. Chronic constipation is often cured by natural remedies: A diet with natural fiber from fruits and vegetables, at least eight cups of water a day, and exercise -- plus maybe an occasional laxative from the drug store.
A:  (520) 888-3416 is the phone number for Convergys Corporation in Tucson, AZ.
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