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TRIHEXYPHENIDYL

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Trihexyphenidyl Adverse Events Reported to the FDA Over Time

How are Trihexyphenidyl adverse event reports trending over time?

This graph shows volume of adverse events submitted to the FDA by quarter for Trihexyphenidyl, as well as related generic and/or brandname drugs containing the same primary active ingredients. Adverse events are counted if Trihexyphenidyl is flagged as the suspect drug causing the adverse event.

Most Common Trihexyphenidyl Adverse Events Reported to the FDA

What are the most common Trihexyphenidyl adverse events reported to the FDA?

Neuroleptic Malignant Syndrome
43 (1.78%)
Somnolence
39 (1.61%)
Agitation
35 (1.45%)
Drug Interaction
33 (1.36%)
Abnormal Behaviour
32 (1.32%)
Hallucination
31 (1.28%)
Tremor
30 (1.24%)
Dyskinesia
28 (1.16%)
Fall
28 (1.16%)
Rhabdomyolysis
27 (1.11%)
Insomnia
25 (1.03%)
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Pyrexia
25 (1.03%)
Confusional State
24 (.99%)
Depressed Level Of Consciousness
21 (.87%)
Convulsion
20 (.83%)
Coronary Artery Dissection
20 (.83%)
Constipation
19 (.78%)
Delirium
19 (.78%)
Aggression
18 (.74%)
Condition Aggravated
18 (.74%)
Hallucination, Visual
18 (.74%)
Loss Of Consciousness
18 (.74%)
Extrapyramidal Disorder
17 (.7%)
Dehydration
16 (.66%)
Speech Disorder
16 (.66%)
Tachycardia
16 (.66%)
Altered State Of Consciousness
15 (.62%)
Asthenia
15 (.62%)
Blood Creatine Phosphokinase Increa...
15 (.62%)
Renal Failure Acute
15 (.62%)
Drug Ineffective
14 (.58%)
Gait Disturbance
14 (.58%)
Hyperthermia
14 (.58%)
Hypotonia
14 (.58%)
Psychotic Disorder
14 (.58%)
Cytolytic Hepatitis
13 (.54%)
Delusion
13 (.54%)
Headache
13 (.54%)
Nausea
13 (.54%)
Overdose
13 (.54%)
Cardiac Arrest
12 (.5%)
Dysstasia
12 (.5%)
Psychiatric Symptom
12 (.5%)
Completed Suicide
11 (.45%)
Fatigue
11 (.45%)
Memory Impairment
11 (.45%)
Muscle Rigidity
11 (.45%)
Restlessness
11 (.45%)
Vision Blurred
11 (.45%)
Blood Pressure Decreased
10 (.41%)
Drug Exposure During Pregnancy
10 (.41%)
Parkinsonism
10 (.41%)
Respiratory Arrest
10 (.41%)
Vomiting
10 (.41%)
Coma
9 (.37%)
Depression
9 (.37%)
Dizziness
9 (.37%)
Dyspnoea
9 (.37%)
Irritability
9 (.37%)
Medication Error
9 (.37%)
Poisoning
9 (.37%)
Abasia
8 (.33%)
Abdominal Compartment Syndrome
8 (.33%)
Back Pain
8 (.33%)
Cognitive Disorder
8 (.33%)
Decreased Appetite
8 (.33%)
Diarrhoea
8 (.33%)
Drug Effect Decreased
8 (.33%)
Drug Withdrawal Syndrome Neonatal
8 (.33%)
Hyponatraemia
8 (.33%)
Ill-defined Disorder
8 (.33%)
Incoherent
8 (.33%)
Multiple Drug Overdose
8 (.33%)
Pneumonia
8 (.33%)
Pollakiuria
8 (.33%)
Tardive Dyskinesia
8 (.33%)
Torticollis
8 (.33%)
Cardio-respiratory Arrest
7 (.29%)
Dysphagia
7 (.29%)
Eye Movement Disorder
7 (.29%)
Gastrointestinal Disorder
7 (.29%)
Haemodynamic Instability
7 (.29%)
Hallucination, Auditory
7 (.29%)
Malaise
7 (.29%)
Pain
7 (.29%)
Posture Abnormal
7 (.29%)
Renal Disorder
7 (.29%)
Shock
7 (.29%)
Urinary Retention
7 (.29%)
Vertigo
7 (.29%)
Abdominal Distension
6 (.25%)
Abdominal Pain
6 (.25%)
Acute Myocardial Infarction
6 (.25%)
Agranulocytosis
6 (.25%)
Amnesia
6 (.25%)
Balance Disorder
6 (.25%)
Disorientation
6 (.25%)
Drooling
6 (.25%)
Drug Toxicity
6 (.25%)
Dry Mouth
6 (.25%)
Dysuria
6 (.25%)

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This graph shows the top adverse events submitted to the FDA for Trihexyphenidyl, as well as related generic and/or brandname drugs containing the same primary active ingredients, from Q1 2004 to Q3 2012. Adverse events are counted if Trihexyphenidyl is flagged as a suspect drug causing the adverse event. For each adverse event listed, percent (%) represents percentage of the adverse event to all adverse events reported for the drug. Percent does not represent a rate related to drug utilization.

Adverse Event Categories for Trihexyphenidyl

What are the most common Trihexyphenidyl adverse events reported to the FDA?

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This graph shows the top categories of adverse events submitted to the FDA for Trihexyphenidyl, as well as related generic and/or brandname drugs containing the same primary active ingredients, from Q1 2004 to Q3 2012. Adverse events are counted if Trihexyphenidyl is flagged as a suspect drug causing the adverse event. For each adverse event listed, percent (%) represents percentage of the adverse event to all adverse events reported for the drug. Percent does not represent a rate related to drug utilization.

Common Uses of Trihexyphenidyl According to Those Reporting Adverse Events

Why are people taking Trihexyphenidyl, according to those reporting adverse events to the FDA?

Parkinsons Disease
285
Drug Use For Unknown Indication
114
Parkinsonism
89
Extrapyramidal Disorder
59
Schizophrenia
51
Product Used For Unknown Indication
49
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Tremor
46
Dystonia
31
Prophylaxis
17
Depression
17
Psychotic Disorder
14
Salivary Hypersecretion
11
Ill-defined Disorder
10
Dyskinesia
9
Torticollis
9
Akathisia
7
Hallucination
7
Bipolar Disorder
7
Multiple System Atrophy
5
Schizoaffective Disorder
5
Muscle Rigidity
5
Head Titubation
5
Restlessness
4
Schizophrenia, Paranoid Type
4
Nervous System Disorder
4
Epilepsy
4
Adverse Drug Reaction
4
Binge Drinking
4
Delusion
4
Musculoskeletal Stiffness
3
Hallucination, Auditory
3
Blepharospasm
3
Movement Disorder
3
Constipation
3
Drug Exposure During Pregnancy
3
Muscle Spasms
3
Agitation
2
Mental Retardation Severity Unspeci...
2
Drooling
2
Dementia Alzheimers Type
2
Anxiety
2
Overdose
2
Cataplexy
2
Delirium
1
Muscle Disorder
1
Loss Of Consciousness
1
Chills
1
Muscle Contracture
1
Impulse-control Disorder
1
Hypertension
1
Adverse Event
1

Drug Labels

LabelLabelerEffective
Trihexyphenidyl HydrochlorideAmerican Health Packaging12-JAN-10
Trihexyphenidyl HydrochlorideWest-ward Pharmaceutical Corp05-FEB-10
Trihexyphenidyl HydrochlorideNCS HealthCare of KY, Inc dba Vangard Labs17-JUN-10
Trihexyphenidyl HydrochloridePharmaceutical Associates, Inc.23-FEB-11
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 10-MAR-11
Trihexyphenidyl HydrochlorideWatson Laboratories, Inc.29-APR-11
Trihexyphenidyl HydrochloridePack Pharmaceuticals, LLC06-MAY-11
Trihexyphenidyl HydrochlorideQualitest Pharmaceuticals09-JUN-11
Trihexyphenidyl HydrochlorideCardinal Health10-JUN-11
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 20-SEP-11
Trihexyphenidyl HydrochlorideGolden State Medical Supply, Inc.09-JAN-12
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 14-MAR-12
Trihexyphenidyl HydrochlorideVersaPharm Incorporated16-MAR-12
Trihexyphenidyl HydrochlorideRichmond Pharmaceuticals, Inc.30-MAY-12
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 01-OCT-12
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 27-MAR-13
Trihexyphenidyl HydrochlorideREMEDYREPACK INC. 27-MAR-13

Trihexyphenidyl Case Reports

What Trihexyphenidyl safety concerns are being reported by doctors and researchers in the medical literature?

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About Results

This report contains aggregated drug side effects and adverse events for Trihexyphenidyl. The data has been pulled from the United States Food and Drug Administration's (US FDA) Adverse Event Reporting System (AERS), a database containing more than 4,000,000 adverse event reports.

DrugCite expands your query using the Unified Medical Language System (UMLS) to include generic drugs and primary active ingredients. While the core of DrugCite's advanced drug filtering algorithm is based on the industry standard UMLS, DrugCite's proprietary filtering system also includes dozens of additional steps to reconcile malformed drug names in the FDA's data.

DrugCite only counts a drug if the submitter of the adverse event indicates that the drug is suspected to have caused the adverse event.

Depending on how the data is aggregated, different counts may occur. When someone submits an adverse event to the FDA, the submitter can attribute multiple adverse events to one or more drugs. For example, an individual taking Paxil could submit the adverse events "anxiety" and "suicidal ideation" for the same individual safety report (ISR). This means when DrugCite aggregates by adverse event, two distinct adverse events are counted in the adverse event graph; once for "anxiety" and again for "suicidal ideation". However, when DrugCite aggregates by individual safety reports irrespective of the details of the adverse events contained within the safety report, the report is only counted once.

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