It is possible for some people to gain weight after stopping Adderall use, but it is not true for everyone. Adderall is known to suppress appetite and increase metabolism, which can result in weight loss. Once a person stops using Adderall, their appetite may increase and metabolism may decrease, which could lead to weight gain. However, weight gain is not a guaranteed outcome and can vary depending on factors such as diet, exercise, and individual metabolism. It is important to speak with a healthcare provider about any concerns regarding weight changes after stopping Adderall use.