Sedatives & Hypnotics
Cyclobenzaprine (Flexeril)
Street names: Flexeril, Cyclobenz, Merck tabs
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- Muscle relaxation, sedation; little euphoria
⚠Key risks
- Overdose causes hallucinations, seizures, heart rhythm problems
- Abuse usually in combination (potentiates opioids)
✚Overdose signs
- Agitation then sedation
- Fast/irregular heartbeat
- Seizures, confusion
📋Quick facts
Also known asFlexeril, Cyclobenz, Merck tabs
CategorySedatives & Hypnotics
Schedule / classNot scheduled (US)
AppearanceYellow/orange 10 mg tablets (Merck); white 5 mg
Street price~$1–$5 per 10 mg tablet
Legal statusRx-only (not federally controlled); prescription misuse is still illegal
Last updated2026-09-12
Sources: FDA, NIH
Category comparison — Sedatives & Hypnotics
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Cyclobenzaprine (Flexeril) | Not scheduled | Overdose causes hallucinations, seizures, heart rhythm problems; Abuse usually in combination (potentiates opioids) | ~$1–$5 per 10 mg tablet |
| Zolpidem (Ambien/Stilnox) | Schedule IV | Sleep-walking, sleep-driving, hallucinations; Dependence and rebound insomnia | ~$2–$10 per 10 mg tablet |
| Secobarbital (Seconal) | Schedule II | Barbiturates: tiny margin between dose and death; Fatal in overdose, brutal withdrawal (seizures) — replaced by benzos in medicine | ~$15–$40 per capsule where diverted |
| Carisoprodol (Soma) | Schedule IV | Converts to meprobamate (Miltown) — dependence; Popular 'Soma Coma' mix with opioids — deadly | ~$1–$8 per 350 mg tablet |
| Pentobarbital (Nembutal) | Schedule II | Veterinary euthanasia drug — overdose is usually fatal; Narrow safety margin (barbiturate) | ~$30–$100+ per vial/capsule-equivalent |
| Butalbital (Fioricet/Fiorinal) | Schedule III | Barbiturate dependence — tolerance builds in weeks; Rebound headaches drive overuse | ~$2–$8 per tablet |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does Cyclobenzaprine (Flexeril) look like?
Yellow/orange 10 mg tablets (Merck); white 5 mg
What are the signs of a Cyclobenzaprine (Flexeril) overdose?
Agitation then sedation; Fast/irregular heartbeat; Seizures, confusion Call emergency services immediately.
How addictive is it?
Overdose causes hallucinations, seizures, heart rhythm problems Dependence can develop with regular use.
🔗Sources & further reading
Facts on this page are compiled from these primary sources. External links open in a new tab.