Cocaine use is risky, but if someone decides to continue using, here are some ways to reduce the risk: 1. **High-quality sources**: Make sure you get your cocaine from a reliable source to reduce the risk of adulteration. 2. **Testing kits**: Use a drug testing kit to test the cocaine you buy to confirm its purity and composition. 3. **Small doses**: Use only very small doses at first to assess how your body responds to the drug. 4. **Avoid mixing**: Do not use with other drugs, including alcohol, to reduce potential negative interactions. 5. **Stay hydrated**: Make sure you stay hydrated to reduce dehydration and other health risks. 6. **Safe environment**: Use in a safe, comfortable environment and with a trusted friend so you can get help if problems arise. 7. **Know your medical condition**: Know your medical condition, especially heart health issues, and avoid using when it is not appropriate. 8. **Pay attention to frequency of use**: Try to control the frequency of use and avoid repeated use to reduce addiction and other health risks. 9. **Pay attention to your body's reactions**: Pay attention to your body's reactions at all times. If you feel uncomfortable or abnormal, you should seek help immediately. 10. **Prepare in advance**: Understand and prepare for possible negative reactions and be familiar with first aid measures. It is important to realize that the use of cocaine still has significant health risks and is best avoided. Seeking professional medical and psychological support is always a wise choice.