Benzodiazepines

Meclonazepam

Street names: MBZ

Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines

⚡What it does

Also known asMBZ

CategoryBenzodiazepines

Schedule / classAnalogue prosecutions (US); controlled several EU states

AppearanceWhite powder or pellets, 3–6 mg typical

Street price~$1–$4 per pellet equivalent

Legal statusAnalogue Act (US); scheduled in parts of EU — check locally

Last updated2026-09-12

Sources: TripSit, EMCDDA, NPS-AD

Substance	Class	Top risks	Street price
Meclonazepam	Analogue prosecutions	Limited human data — unknown long-term harms; Dependence assumed class-typical	~$1–$4 per pellet equivalent
Diazepam	Schedule IV	Dependence in 2–4 weeks of daily use; Dangerous withdrawal (seizures) — never stop cold turkey	~$1–$10 per 10 mg tablet
Alprazolam (Xanax 2 mg)	Schedule IV	Dependence within weeks; brutal withdrawal (seizures risk); Counterfeit 'bars' increasingly contain fentanyl or bromazolam	~$2–$10 per 2 mg bar
Lorazepam (Ativan 2.5 mg)	Schedule IV	Dependence and withdrawal seizures; Rebound anxiety between doses	~$1–$5 per 2.5 mg tablet
Clonazepam (Rivotril/Klonopin 2 mg)	Schedule IV	Long half-life — dependence builds silently; Withdrawal can last months	~$1–$5 per 2 mg tablet
Nitrazepam (Nipam 5 mg)	Schedule IV	Morning 'hangover' impairment; Dependence and falls in older users	~$1–$4 per 5 mg tablet

Street prices are regional estimates. Potency and cuts vary constantly.

What does Meclonazepam look like?

White powder or pellets, 3–6 mg typical

What are the signs of a Meclonazepam overdose?

Sedation; Motor impairment; Slow breathing with mixes Call emergency services immediately.

How addictive is it?

Limited human data — unknown long-term harms Withdrawal can be life-threatening — medical tapering is essential.

Facts on this page are compiled from these primary sources. External links open in a new tab.