Product Name

Benztropine Mesylate

CAS Number


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Product Name:
Benztropine Mesylate
CAS Number:
For use as an adjunct in the therapy of all forms of parkinsonism and also for use in the control of extrapyramidal disorders due to neuroleptic drugs.
Mode of Action:

Benztropine is a selective M1 muscarinic acetylcholine receptor antagonist. It is able to discriminate between the M1 (cortical or neuronal) and the peripheral muscarinic subtypes (cardiac and glandular). Benztropine partially blocks cholinergic activity in the CNS, which is responsible for the symptoms of Parkinson's disease. It is also thought to increase the availability of dopamine, a brain chemical that is critical in the initiation and smooth control of voluntary muscle movement.


Benztropine is an anticholinergic used in the symptomatic treatment of all etiologic groups of parkinsonism and drug-induced extrapyramidal reactions (except tardive dyskinesia). Benztropine possesses both anticholinergic and antihistaminic effects, although only the former has been established as therapeutically significant in the management of parkinsonism. Benztropine's anticholinergic activity is about equal to that of atropine. Benztropine also inhibits dopamine reuptake via the dopamine transporter at nerve terminals.


Signs of overdose include confusion, nervousness, listlessness, hallucinations, dizziness; muscle weakness, ataxia, dry mouth, mydriasis, blurred vision, palpitations, tachycardia, elevated blood pressure, nausea, vomiting, dysuria, numbness of fingers, headache, delirium, coma, shock, convulsions, respiratory arrest, anhidrosis, hyperthermia, glaucoma, and constipation.

Molecular Mass:
1-alpha-H,5-alpha-H-Tropane, 3-alpha-(diphenylmethoxy)-, methanesulfonate, 3-alpha-(Diphenylmethoxy)-1-alpha-H, 5-alpha-H-tropane methanesulfonate, 3-Diphenylmethoxytropane mesylate, 3-Diphenylmethoxytropane methanesulfonate, 3alpha-(Diphenylmethoxy)-1alphaH,5alphaH-tropane methanesulfonate, Benzatropine mesylate, Benztropine mesilate, Benztropine mesylate, Benztropine methanesulfonate, Cobrentin methanesulfonate, Cogentin, EINECS 205-048-8, MK 02, NSC 169913, Tropine benzohydryl ether methanesulfonate, UNII-WMJ8TL7510
AHFS Code:
General Reference:
General Reference:

  1. Wszola BA, Newell KM, Sprague RL: Risk factors for tardive dyskinesia in a large population of youths and adults. Exp Clin Psychopharmacol. 2001 Aug;9(3):285-96. Pubmed
  2. van Harten PN, Hoek HW, Matroos GE, Koeter M, Kahn RS: Intermittent neuroleptic treatment and risk for tardive dyskinesia: Curacao Extrapyramidal Syndromes Study III. Am J Psychiatry. 1998 Apr;155(4):565-7. Pubmed

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