| heroin → Causes → constipation | 0.30 | |
| heroin → Causes → nausea | 0.22 | |
| heroin → Causes → vomiting | 0.22 | |
| heroin → Causes → physical dependence | 0.19 | |
| heroin → Causes → tolerance | 0.19 | |
| heroin → Causes → respiratory depression | 0.16 | |
| heroin → Causes → severe withdrawal symptoms | 0.16 |