Benztropine

— THERAPEUTIC CATEGORIES —
  • Parkinsonism

Benztropine Generic Name & Formulations

General Description

Benztropine mesylate 0.5mg, 1mg, 2mg; scored tabs.

Pharmacological Class

Anticholinergic.

How Supplied

Contact supplier

Mechanism of Action

Benztropine mesylate possesses both anticholinergic and antihistaminic effects, although only the former have been established as therapeutically significant in the management of parkinsonism.

Benztropine Indications

Indications

Adjunct in Parkinsonism, drug-induced extrapyramidal disorders.

Benztropine Dosage and Administration

Adult

Parkinsonism: initially 0.5–1mg at bedtime. May increase by 0.5mg at 5–6 day intervals; max 6mg daily. Extrapyramidal disorders: 1–4mg 1–2 times daily. Acute dystonic reactions: 1–2mg IM or IV.

Children

See Contraindications. Use cautiously in older children.

Benztropine Contraindications

Contraindications

Children <3yrs old.

Benztropine Boxed Warnings

Not Applicable

Benztropine Warnings/Precautions

Warnings/Precautions

Tardive dyskinesia: not recommended. Narrow-angle glaucoma. Tachycardia. Psychosis. Prostatic hypertrophy. GI or GU obstruction. Chronically ill. Alcoholics. CNS disease. Exposure to extreme heat. Elderly. Pregnancy.

Benztropine Pharmacokinetics

Metabolism

N-oxidation, N-dealkylation, ring hydroxylation. ~95% serum protein bound.

Elimination

Renal. Half-life: ~36 hours.

Benztropine Interactions

Interactions

Paralytic ileus, hyperthermia, heat stroke with phenothiazines, tricyclic antidepressants. Antagonizes psychotropics.

Benztropine Adverse Reactions

Adverse Reactions

Anticholinergic and antihistaminic effects, weakness, confusion, anhidrosis, excitement, GI upset, depression, lethargy, heat stroke, dysuria, toxic psychosis, rash.

Benztropine Clinical Trials

See Literature

Benztropine Note

Notes

Tabs formerly known under the brand name Cogentin.

Benztropine Patient Counseling

See Literature