Stevia, a natural zero-calorie sweetener, generally does not cause diarrhea by itself. However, commercial stevia products blended with sugar alcohols like erythritol may cause digestive issues such as diarrhea, especially in sensitive individuals. Pure stevia is safe with far-reaching benefits for health-oriented food and beverage products. Responsible formulation and consumption minimize side effects while leveraging stevia's natural sweetness and low glycemic impact.