Which weight loss supplement is associated with indigestion, bloating, and constipation?

Chitosan is a weight loss supplement derived from the shells of crustaceans. It is known for its ability to bind dietary fats in the gastrointestinal tract, which may contribute to a reduction in fat absorption. However, this binding action can lead to gastrointestinal side effects, including indigestion, bloating, and constipation. These symptoms occur because Chitosan can impact gut motility and create a feeling of fullness, which, while potentially beneficial for appetite control, may also lead to discomfort when taken in larger doses or without adequate hydration.

In contrast, other supplements listed have different mechanisms and side effects. For example, Glucomannan is also a fiber supplement that can lead to gastrointestinal issues, but it's more commonly associated with diarrhea when consumed improperly, due to its bulk-forming properties. Garcinia cambogia is often promoted for weight loss but does not typically report digestive side effects as prominently. Caffeine, while a stimulant, is more associated with increased metabolism and energy expenditure rather than significant digestive issues like bloating or constipation.