Hello Shura, thank you for sharing your product review of Qualia Mind. We understand you reached out to our support team and reported that you experienced lightheadedness when taking Qualia Mind. Qualia Mind was designed to be free of adverse side effects when taken appropriately. However, Qualia Mind is not a placebo but is a powerful psychoactive with high-quality ingredients, so be please read and follow all of the instructions carefully. A small percentage of people may experience minor issues, such as headaches, sleep disturbance, muscle tightness, upset stomach, or fatigue. Please review the troubleshooting section for information on how to resolve them. Thank you!