When taking Modvigil 200, it’s important to avoid mixing it with certain substances to ensure safety and effectiveness. Combining Modvigil with alcohol can increase the risk of side effects like dizziness, drowsiness, and impaired judgment. It is also advisable to avoid excessive caffeine, as it can amplify jitteriness, anxiety, or restlessness. Additionally, Modvigil 200 mg may interact with certain medications, including hormonal contraceptives, as it can reduce their effectiveness, and drugs like antidepressants, anticoagulants, or anticonvulsants, which might lead to adverse reactions. Always inform your healthcare provider about any medications, supplements, or substances you’re using before starting Modvigil to avoid harmful interactions and ensure proper guidance.