I still have an old bottle of L-Glutamine on the shelf, used to use it to curb cravings for sweets and carbs. Here's an article telling how it supports and protects the gastrointestinal tract...
Glutamine (also called L-glutamine), one of the protein building blocks known as amino acids, promotes digestive health in several ways. It is the preferred fuel source of the cells that line the small intestine, where most nutrient absorption takes place. It is used to synthesize glutathione, a key antioxidant, and to help clear ammonia, a toxin that can throw off the body’s acid-base balance. What’s more, glutamine has shown an ability to protect the stomach against ulceration and to prevent stomach contents from backing up into the esophagus, which helps ease heartburn.
A number of studies support glutamine’s digestion-supportive properties. It has been found to help protect preterm babies against leaky gut (Journal of Maternal-Fetal & Neonatal Medicine 10/11) as well as severely ill patients on feeding tubes. And glutamine’s ability to reduce ammonia levels has provided protection against stomach disorders associated with H. pylori, a microbe linked to ulcers, in animals (Journal of Pharmacological Sciences 1/10).
As important as glutamine is to intestinal health, it works best in combination with other nutrients. These include calcium, which helps buffer acidity, and antioxidants such as selenium and vitamins C and E, which fight free radicals. Beneficial microbes that normally inhabit the intestinal tract, known as probiotics, help turn dietary fat into fatty acids needed for a healthy mucosa. And whole-food concentrates have an alkalinizing effect that promotes proper digestion, which helps ease symptoms.
FULL ARTICLE HERE: http://www.energytimes.com/pages/departments/1201/suppsavvy1201.html