If you or someone else has ingested an overdose of a drug, the most important thing is to seek medical help immediately, call 911 or contact professional medical personnel as soon as possible. Self-help is not a substitute for professional medical intervention, but while waiting for help, you can try the following points to protect yourself to the greatest extent: 1. **Identify the drug**: Identify which drug has caused the overdose so that medical personnel can provide more accurate help. 2. **Follow the instructions**: If there are overdose measures on the drug packaging or instructions, please refer to this information first. 3. **Do not induce vomiting**: Do not try to induce vomiting on your own unless a professional specifically recommends doing so, as this may cause more complicated problems. 4. **Monitor symptoms**: Pay close attention to any sudden changes in symptoms, such as difficulty breathing, confusion, or extreme drowsiness, and report this information to emergency personnel in a timely manner. 5. **Stay calm**: Try to stay in a safe environment and avoid driving or engaging in activities that may cause injury. 6. **Drink water**: If the drug instructions recommend, you can drink water in moderation to help dilute the drug concentration in your body, but do not drink too much water. 7. **Prepare information**: Provide as much information as possible to emergency personnel, such as the name of the medication taken, dosage, time, and personal health conditions. Always make seeking professional medical help a priority, as drug overdose can be life-threatening and timely intervention is critical.