Trihexyphenidyl
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Deepika Beereddy, MBBS [2]
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Black Box Warning
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See full prescribing information for complete Boxed Warning.
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Overview
Trihexyphenidyl is a {{{drugClass}}} that is FDA approved for the {{{indicationType}}} of {{{indication}}}. There is a Black Box Warning for this drug as shown here. Common adverse reactions include nausea, xerostomia, dizziness, blurred vision, feeling nervous.
Adult Indications and Dosage
FDA-Labeled Indications and Dosage (Adult)
Parkinson's disease
- Dosing Information
- For treating PARKINSON'S DISEASE, an initial oral dose (tablet or elixir) of 1 milligram the first day followed by increases of 2 milligram increments at 3 to 5 day intervals to a total dose of 6 to 10 milligrams/day in 3 to 4 divided doses is recommended. Postencephalitic patients may require 12 to 15 milligrams/day.
- It is recommended that trihexyphenidyl be taken in 3 divided doses at mealtime. If the total daily dose is greater than 10 milligrams/day it may be given in 4 divided doses (at mealtime and bedtime).
- The recommended dose of trihexyphenidyl when used concomitantly with levodopa is 1 to 2 milligrams three times daily.
- Sustained release capsules should not be used for initial therapy due to the high dosage per capsule. After patients are stabilized on conventional therapy they may be switched to the sustained release form on a milligram for milligram basis as a single dose or 2 divided doses 12 hours apart.
Parkinsonism due to drug
- Dosing Information
- For treating DRUG-INDUCED PARKINSONISM, five to 15 milligrams as a total daily dose is recommended to control extrapyramidal effects from phenothiazines, thioxanthenes and butyrophenones. It is recommended that therapy be initiated with a single 1-milligram dose. If the extrapyramidal manifestations are not controlled in a few hours, subsequent doses may be progressively increased until satisfactory control is achieved.
- Satisfactory control may sometimes be more rapidly achieved by a temporary dose reduction of the tranquilizer when instituting trihexyphenidyl therapy and adjusting the dose of both drugs until the desired effect is obtained.
- Sustained release capsules should not be used for initial therapy due to the high dosage per capsule. After patients are stabilized on conventional therapy they may be switched to the sustained release form on a milligram for milligram basis as a single dose or 2 divided doses 12 hours apart.
Off-Label Use and Dosage (Adult)
Guideline-Supported Use
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- Developed by:
- Class of Recommendation:
- Strength of Evidence:
- Dosing Information
- Dosage
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There is limited information regarding Off-Label Guideline-Supported Use of Trihexyphenidyl in adult patients.
Non–Guideline-Supported Use
Condition1
- Dosing Information
- Dosage
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There is limited information regarding Off-Label Non–Guideline-Supported Use of Trihexyphenidyl in adult patients.
Pediatric Indications and Dosage
FDA-Labeled Indications and Dosage (Pediatric)
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- Dosing Information
- Dosage
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There is limited information regarding FDA-Labeled Use of Trihexyphenidyl in pediatric patients.
Off-Label Use and Dosage (Pediatric)
Guideline-Supported Use
Condition1
- Developed by:
- Class of Recommendation:
- Strength of Evidence:
- Dosing Information
- Dosage
Condition2
There is limited information regarding Off-Label Guideline-Supported Use of Trihexyphenidyl in pediatric patients.
Non–Guideline-Supported Use
Condition1
- Dosing Information
- Dosage
Condition2
There is limited information regarding Off-Label Non–Guideline-Supported Use of Trihexyphenidyl in pediatric patients.
Contraindications
- Condition1
Warnings
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See full prescribing information for complete Boxed Warning.
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- Description
Precautions
- Description
Adverse Reactions
Clinical Trials Experience
There is limited information regarding Clinical Trial Experience of Trihexyphenidyl in the drug label.
Body as a Whole
Cardiovascular
Digestive
Endocrine
Hematologic and Lymphatic
Metabolic and Nutritional
Musculoskeletal
Neurologic
Respiratory
Skin and Hypersensitivy Reactions
Special Senses
Urogenital
Miscellaneous
Postmarketing Experience
There is limited information regarding Postmarketing Experience of Trihexyphenidyl in the drug label.
Body as a Whole
Cardiovascular
Digestive
Endocrine
Hematologic and Lymphatic
Metabolic and Nutritional
Musculoskeletal
Neurologic
Respiratory
Skin and Hypersensitivy Reactions
Special Senses
Urogenital
Miscellaneous
Drug Interactions
- Drug
- Description
Use in Specific Populations
Pregnancy
- Pregnancy Category
- Australian Drug Evaluation Committee (ADEC) Pregnancy Category
There is no Australian Drug Evaluation Committee (ADEC) guidance on usage of Trihexyphenidyl in women who are pregnant.
Labor and Delivery
There is no FDA guidance on use of Trihexyphenidyl during labor and delivery.
Nursing Mothers
There is no FDA guidance on the use of Trihexyphenidyl with respect to nursing mothers.
Pediatric Use
There is no FDA guidance on the use of Trihexyphenidyl with respect to pediatric patients.
Geriatic Use
There is no FDA guidance on the use of Trihexyphenidyl with respect to geriatric patients.
Gender
There is no FDA guidance on the use of Trihexyphenidyl with respect to specific gender populations.
Race
There is no FDA guidance on the use of Trihexyphenidyl with respect to specific racial populations.
Renal Impairment
There is no FDA guidance on the use of Trihexyphenidyl in patients with renal impairment.
Hepatic Impairment
There is no FDA guidance on the use of Trihexyphenidyl in patients with hepatic impairment.
Females of Reproductive Potential and Males
There is no FDA guidance on the use of Trihexyphenidyl in women of reproductive potentials and males.
Immunocompromised Patients
There is no FDA guidance one the use of Trihexyphenidyl in patients who are immunocompromised.
Administration and Monitoring
Administration
- Oral
- Intravenous
Monitoring
There is limited information regarding Monitoring of Trihexyphenidyl in the drug label.
- Description
IV Compatibility
There is limited information regarding IV Compatibility of Trihexyphenidyl in the drug label.
Overdosage
Acute Overdose
Signs and Symptoms
- Description
Management
- Description
Chronic Overdose
There is limited information regarding Chronic Overdose of Trihexyphenidyl in the drug label.
Pharmacology
There is limited information regarding Trihexyphenidyl Pharmacology in the drug label.
Mechanism of Action
Structure
Pharmacodynamics
There is limited information regarding Pharmacodynamics of Trihexyphenidyl in the drug label.
Pharmacokinetics
There is limited information regarding Pharmacokinetics of Trihexyphenidyl in the drug label.
Nonclinical Toxicology
There is limited information regarding Nonclinical Toxicology of Trihexyphenidyl in the drug label.
Clinical Studies
There is limited information regarding Clinical Studies of Trihexyphenidyl in the drug label.
How Supplied
Storage
There is limited information regarding Trihexyphenidyl Storage in the drug label.
Images
Drug Images
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Package and Label Display Panel
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Patient Counseling Information
There is limited information regarding Patient Counseling Information of Trihexyphenidyl in the drug label.
Precautions with Alcohol
- Alcohol-Trihexyphenidyl interaction has not been established. Talk to your doctor about the effects of taking alcohol with this medication.
Brand Names
Artane, Trihexane, Tritane.
Look-Alike Drug Names
- A® — B®[1]
Drug Shortage Status
Price
References
The contents of this FDA label are provided by the National Library of Medicine.
- ↑ "http://www.ismp.org". External link in
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