Cannabinoids
XLR-11 (5F-UR-144)
Street names: XLR-11, 5F-UR-144
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Synthetic-cannabinoid intoxication
⚠Key risks
- Linked to a multi-state outbreak of acute kidney injury
- Seizures and psychosis
- Deaths reported in Japan and the US
✚Overdose signs
- Kidney pain, reduced urination
- Seizures
- Agitation, vomiting
Category comparison — Cannabinoids
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| XLR-11 (5F-UR-144) | Schedule I | Linked to a multi-state outbreak of acute kidney injury; Seizures and psychosis | In spice blends ~$5–$20/pack |
| 4F-ADB | Schedule I | Associated with 'Spice zombies' — catatonia, seizures; Unpredictable potency sprayed unevenly | ~$5–$20 per gram of 'herbal blend' |
| 5F-ADB / 5F-ADBICA | Schedule I | Multiple deaths linked to 5F-ADB (the compound behind early 'zombie spice' outbreaks); Seizures, kidney injury | ~$5–$20 per gram of blend |
| JWH-250 | Schedule I | First-generation spice compound; contaminated batches caused outbreaks; Anxiety, tachycardia | ~$5–$15 per gram of blend |
| NM-2201 (CBL-2201) | Analogue prosecutions | Little human data; Severe anxiety, seizures reported | ~$5–$20 per gram of blend |
| Cannabis (Weed) | Schedule I | Anxiety, panic attacks, paranoia — especially high-THC strains and concentrates; Impaired memory, coordination and driving ability for hours | ~$10–$20 per gram flower |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does XLR-11 (5F-UR-144) look like?
Sprayed on herbal blends; notorious 2012–13 'spice' wave ingredient
What are the signs of a XLR-11 (5F-UR-144) overdose?
Kidney pain, reduced urination; Seizures; Agitation, vomiting Call emergency services immediately.
How addictive is it?
Linked to a multi-state outbreak of acute kidney injury Dependence can develop with regular use.