Chlormezanona Uses, Dosage, Side Effects, Food Interaction and all others data.

A non-benzodiazepine that is used in the management of anxiety. It has been suggested for use in the treatment of muscle spasm.

Chlormezanona is a non-benzodiazepine muscle relaxant. It was discontinued worldwide in 1996 by its manufacturer due to confirmed serious and rare cutaneous reactions (toxic epidermal necrolysis).

Trade Name Chlormezanona
Availability Discontinued
Generic Chlormezanone
Chlormezanone Other Names Chlormethazanone, Chlormezanona, Chlormezanone, Chlormézanone, Chlormezanonum, Clormezanona
Formula C11H12ClNO3S
Weight Average: 273.736
Monoisotopic: 273.022641652
Groups Approved, Investigational, Withdrawn
Therapeutic Class
Available Country
Last Updated: September 19, 2023 at 7:00 am


Used in the management of anxiety and in the treatment of muscle spasm.

How Chlormezanona works

Chlormezanona binds to central benzodiazepine receptors which interact allosterically with GABA receptors. This potentiates the effects of the inhibitory neurotransmitter GABA, increasing the inhibition of the ascending reticular activating system and blocking the cortical and limbic arousal that occurs following stimulation of the reticular pathways.


Symptoms of overdose include drowsiness, weakness, nausea, dizziness, abdominal pain, cerebral oedema and renal tubular necrosis, hyperglycaemia and hypoglycaemia, liver damage, encephalopathy, coma and death.

Food Interaction

[Moderate] GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents.

Use in combination may result in additive central nervous system depression and
MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol.

Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.

Chlormezanona Disease Interaction

Major: depressionModerate: glaucoma, liver disease

Innovators Monograph

You find simplified version here Chlormezanona

*** Taking medicines without doctor's advice can cause long-term problems.