Dextrin is a group of small carbohydrate molecules made by breaking down starch. Supplement forms often use resistant dextrin, a soluble fiber that dissolves easily in water or other drinks.
Mix it into a beverage and take it with meals. The fiber helps support regular digestion and healthy blood sugar levels when you stick to a balanced diet.
Start with a small amount to avoid digestive upset. Drink enough water with any fiber supplement. Most people handle it without trouble.