What Is Benztropine?

Benztropine mesylate (brand name Cogentin) is an anticholinergic medication that blocks acetylcholine receptors in the brain to reduce involuntary muscle movements, tremors, and stiffness.

Originally developed by Merck under the brand name Cogentin, Benztropine has been available in the United States for decades. The brand-name product has since been discontinued, but multiple generic manufacturers continue to produce Benztropine mesylate tablets and injectable solutions. It is not a controlled substance.

Benztropine belongs to the anticholinergic drug class (specifically, a muscarinic receptor antagonist). It also has some dopamine reuptake inhibition and antihistamine properties, which contribute to its effectiveness in treating movement disorders.

What Is Benztropine Used For?

Benztropine is FDA-approved for the following uses:

• Parkinson's disease — Used as an adjunctive (add-on) therapy for all forms of parkinsonism, including idiopathic Parkinson's disease and postencephalitic parkinsonism. It helps reduce tremor, rigidity, and drooling.
• Drug-induced extrapyramidal symptoms (EPS) — This is the most common reason Benztropine is prescribed today. Antipsychotic medications like Haloperidol, Chlorpromazine, Risperidone, and Fluphenazine can cause movement-related side effects including muscle stiffness, restlessness (akathisia), and involuntary movements. Benztropine counteracts these effects.
• Acute dystonic reactions — Sudden, involuntary muscle contractions that can cause neck twisting, jaw clenching, or eye rolling. Benztropine injection provides rapid relief in these emergencies.

Off-label uses include treatment of chronic drooling (sialorrhea) in developmentally disabled patients and intractable hiccups.

How Is Benztropine Taken?

Benztropine comes in two forms:

• Oral tablets — Available in 0.5 mg, 1 mg, and 2 mg strengths
• Injectable solution — 1 mg/mL for intramuscular (IM) or intravenous (IV) use, typically administered in hospital or emergency settings

Dosing

The typical dose range is 0.5 mg to 6 mg per day. Here's how dosing generally works:

• Starting dose — Most patients begin at 0.5 mg once or twice daily
• Titration — The dose is increased gradually by 0.5 mg every 5 to 6 days until optimal symptom control is achieved
• Maintenance — Most patients find relief at 1 to 2 mg daily, though some may need up to 6 mg
• Timing — Benztropine can be taken with or without food. Many patients take it at bedtime to minimize daytime drowsiness

For acute dystonic reactions, Benztropine is often given as a 1 to 2 mg injection (IM or IV) followed by 1 to 2 mg orally twice daily to prevent recurrence.

To learn more about how this medication works in your body, see our article on how Benztropine works.

Who Should Not Take Benztropine?

Benztropine is not safe for everyone. You should not take it if you have:

• Narrow-angle glaucoma — Benztropine can increase eye pressure and worsen this condition
• Tardive dyskinesia — Benztropine may actually worsen tardive dyskinesia symptoms (this is different from other drug-induced movement disorders)
• Bowel obstruction or megacolon — Anticholinergics slow gut motility, which can be dangerous with existing blockages
• Myasthenia gravis — Blocking acetylcholine can worsen muscle weakness in this condition
• Age under 3 years — Benztropine is contraindicated in young children
• Known allergy to Benztropine or any inactive ingredients in the formulation

Use with caution in:

• Elderly patients — Higher risk of confusion, falls, cognitive impairment, and urinary retention. Benztropine is preferred over Trihexyphenidyl in this population due to lower CNS stimulation, but still requires careful monitoring.
• Patients with prostate enlargement — Increased risk of urinary retention
• Hot environments — Benztropine impairs sweating, increasing the risk of heatstroke

Be sure to review Benztropine drug interactions and tell your doctor about all medications you're currently taking.

How Much Does Benztropine Cost?

Benztropine is one of the more affordable prescription medications available:

• Generic cash price — $4 to $30 for a 30-day supply of tablets, depending on the pharmacy and strength
• With discount coupons — As low as $4.34 through GoodRx and similar services
• With insurance — Benztropine is on most formularies as a Tier 1 preferred generic. Copays are typically $0 to $10 with most plans.
• Medicare Part D — Covered on most Medicare formularies with low copays

The original brand Cogentin is discontinued, so only generic versions are available. There is no manufacturer savings program, but patients who need financial help can check NeedyMeds.org and RxAssist.org for generic assistance programs.

For a complete guide to saving money, see how to save money on Benztropine.

Final Thoughts

Benztropine is a well-established, affordable medication that plays an important role in managing Parkinson's disease symptoms and antipsychotic side effects. It's been around for decades, and while the brand name Cogentin is no longer manufactured, generic Benztropine remains widely available and covered by most insurance plans.

If you're prescribed Benztropine and need help finding a pharmacy with stock, or if you want to compare prices, Medfinder can help you locate it near you.