GFO is a powdered drink mix that contains glutamine, fiber, and oligosaccharides. The product name is an acronym derived from the first letters of the 3 ingredients. The product is intended as a nutritional supplement for the intestines and has a fresh lemon flavor.
| Nutrition facts (15 g/packet) | Calories: 36 kcal; protein: 3.6 g; fat: 0 g; carbohydrate: 6.01 g; dietary fiber: 5.0 g; sodium: 0.2–1.2 mg; lactosucrose: 1.45 g; and glutamine: 3.0 g. |
| Product category | Powdered drink mix |
| Ingredients | Polydextrose, lactosucrose, dextrin, sugar, glutamine, hydrolyzed guar gum, acidulant, natural flavors, and sweetener (sucralose). |
| Volume | 15 g |
| Best before date | See the lower part of the container. |
| Distributor | Otsuka Pharmaceutical Factory, Inc. |