There are several types of prebiotics available, including:

1. Inulin and Fructooligosaccharides (FOS): Inulin and FOS are commonly found in many plant-based foods such as chicory root, Jerusalem artichoke, and bananas.
2. Galactooligosaccharides (GOS): GOS are found in human milk, but can also be derived from lactose in dairy products.
3. Lactulose: Lactulose is a synthetic disaccharide that is used as a laxative, but also has prebiotic properties.
4. Resistant Starch: Resistant starch is a type of starch that resists digestion in the small intestine and passes into the colon intact, where it can serve as a prebiotic.
5. Polydextrose: Polydextrose is a synthetic polymer of glucose that is commonly used as a low-calorie bulking agent in food products.
6. Xylooligosaccharides (XOS): XOS are found in various plants and are often used as a sweetener in food products.

Among these types of prebiotics, inulin FOS is one of the most well-studied and commonly used prebiotic fibers. It has been shown to have various health benefits, including improved gut health, increased satiety, and improved blood sugar control. Inulin FOS is also considered to be relatively safe and well-tolerated, even at higher doses. However, individual responses to inulin FOS can vary, and some people may experience digestive discomfort when consuming large amounts of inulin FOS. It’s important to speak with a healthcare professional before incorporating inulin FOS or any other prebiotic fiber into your diet.