One kind of sugar used to relieve constipation is called Freelax Liquid. Known as a laxative, it draws water into your colon to facilitate the passage of your feces. A severe liver condition called hepatic encephalopathy can alter brain function and result in loss of consciousness, tremors (shaking), confusion, and trouble sleeping. Freelax Liquid is believed to function by reducing blood levels of ammonia, a chemical that negatively impacts the brain. When taken as directed, it can enhance brain function and lessen hepatic encephalopathy symptoms.