Vegan protein powder, like any other food, can potentially cause digestive issues such as constipation if consumed in excessive amounts or if a person is not adequately hydrated. However, it is not a common occurrence and can vary based on the individual's tolerance. To prevent constipation, it is important to drink enough water and have a balanced diet with fiber-rich foods. If you experience digestive discomfort after consuming vegan protein powder, you should consult a healthcare professional.