| DXM | |
|---|---|
| Type | Substance |
| Category | Dissociative |
| Chemical Name | Dextromethorphan |
| Aliases | DXM, Dextromethorphan, Robo |
| ROA(s) | Oral, Insufflated |
| Drug Class(es) | Dissociative |
| Oral | |
|---|---|
| Threshold | 100–150 mg |
| Light | 150–300 mg |
| Common | 300–600 mg |
| Strong | 600–900 mg |
| Heavy | 900+ mg |
| Onset | 30–90 min |
| Duration | 6–8 hours |
| After Effects | 2–6 hours |
| Notes | Plateaus are body-weight dependent; citrate/HBr salts differ. |
| Insufflated | |
| Threshold | 30–50 mg |
| Light | 50–100 mg |
| Common | 100–200 mg |
| Strong | 200–300 mg |
| Heavy | 300+ mg |
| Onset | 5–20 min |
| Duration | 4–7 hours |
| Notes | Less common; nasal use of syrups is impractical/irritating. |
DXM is a dissociative cough suppressant with dose-dependent “plateaus,” from mild drunken dissociation to full out-of-body experiences. Duration is long, and combination with MAOIs or serotonergic drugs can be dangerous.
Experience reports in this archive that include DXM:
