Generally, GNC has specific policies regarding returns and exchanges for clearance items. Typically, clearance items may not be eligible for returns or exchanges, as these products are often sold at a reduced price to clear inventory. However, GNC's return policy can vary based on the specific store location and circumstances. It is advisable to check the terms and conditions associated with clearance purchases on the GNC website for the most accurate and current information. Additionally, if you have further questions or require assistance, you may want to look for contact information on the GNC website or refer to your local GNC store for their specific return policy regarding clearance items. Remember, being familiar with store policies can help ensure a smooth shopping experience.