Learn how to prepare for Severe Allergy Attacks.

Vistaril

Pronunciation

Generic Name: hydroxyzine pamoate
Dosage Form: capsules and oral suspension

Vistaril®
(hydroxyzine pamoate)
Capsules and
Oral Suspension

Vistaril Description

Hydroxyzine pamoate is designated chemically as 1-(p-chlorobenzhydryl) 4- [2-(2-hydroxyethoxy) ethyl] diethylenediamine salt of 1,1′-methylene bis (2 hydroxy- 3-naphthalene carboxylic acid).

Slideshow: Top Prevention Tips - Seasonal Allergies

Inert ingredients for the capsule formulations are: hard gelatin capsules (which may contain Yellow 10, Green 3, Yellow 6, Red 33, and other inert ingredients); magnesium stearate; sodium lauryl sulfate; starch; sucrose.

Inert ingredients for the oral suspension formulation are: carboxymethylcellulose sodium; lemon flavor; propylene glycol; sorbic acid; sorbitol solution; water.

Vistaril - Clinical Pharmacology

Vistaril® (hydroxyzine pamoate) is unrelated chemically to the phenothiazines, reserpine, meprobamate, or the benzodiazepines.

Vistaril is not a cortical depressant, but its action may be due to a suppression of activity in certain key regions of the subcortical area of the central nervous system. Primary skeletal muscle relaxation has been demonstrated experimentally. Bronchodilator activity, and antihistaminic and analgesic effects have been demonstrated experimentally and confirmed clinically. An antiemetic effect, both by the apomorphine test and the veriloid test, has been demonstrated. Pharmacological and clinical studies indicate that hydroxyzine in therapeutic dosage does not increase gastric secretion or acidity and in most cases has mild antisecretory activity. Hydroxyzine is rapidly absorbed from the gastrointestinal tract and Vistaril's clinical effects are usually noted within 15 to 30 minutes after oral administration.

INDICATIONS

For symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested.

Useful in the management of pruritus due to allergic conditions such as chronic urticaria and atopic and contact dermatoses, and in histamine-mediated pruritus.

As a sedative when used as premedication and following general anesthesia, Hydroxyzine may potentiate meperidine (Demerol®) and barbiturates, so their use in pre-anesthetic adjunctive therapy should be modified on an individual basis. Atropine and other belladonna alkaloids are not affected by the drug. Hydroxyzine is not known to interfere with the action of digitalis in any way and it may be used concurrently with this agent.

The effectiveness of hydroxyzine as an antianxiety agent for long-term use, that is, more than 4 months, has not been assessed by systematic clinical studies. The physician should reassess periodically the usefulness of the drug for the individual patient.

Contraindications

Hydroxyzine, when administered to the pregnant mouse, rat, and rabbit, induced fetal abnormalities in the rat and mouse at doses substantially above the human therapeutic range. Clinical data in human beings are inadequate to establish safety in early pregnancy. Until such data are available, hydroxyzine is contraindicated in early pregnancy.

Hydroxyzine pamoate is contraindicated for patients who have shown a previous hypersensitivity to any component of this medication.

Warnings

Nursing Mothers

It is not known whether this drug is excreted in human milk. Since many drugs are so excreted, hydroxyzine should not be given to nursing mothers.

Precautions

THE POTENTIATING ACTION OF HYDROXYZINE MUST BE CONSIDERED WHEN THE DRUG IS USED IN CONJUNCTION WITH CENTRAL NERVOUS SYSTEM DEPRESSANTS SUCH AS NARCOTICS, NON-NARCOTIC ANALGESICS AND BARBITURATES. Therefore, when central nervous system depressants are administered concomitantly with hydroxyzine, their dosage should be reduced. Since drowsiness may occur with use of the drug, patients should be warned of this possibility and cautioned against driving a car or operating dangerous machinery while taking Vistaril (hydroxyzine pamoate). Patients should be advised against the simultaneous use of other CNS depressant drugs, and cautioned that the effect of alcohol may be increased.

Geriatric Use

A determination has not been made whether controlled clinical studies of Vistaril included sufficient numbers of subjects aged 65 and over to define a difference in response from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal or cardiac function and of concomitant disease or other drug therapy.

The extent of renal excretion of Vistaril has not been determined. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selections.

Sedating drugs may cause confusion and over sedation in the elderly; elderly patients generally should be started on low doses of Vistaril and observed closely.

Adverse Reactions

Side effects reported with the administration of Vistaril are usually mild and transitory in nature.

Skin and Appendages: Oral hydroxyzine hydrochloride is associated with fixed drug eruptions in post-marketing reports.

Anticholinergic: Dry mouth.

Central Nervous System: Drowsiness is usually transitory and may disappear in a few days of continued therapy or upon reduction of the dose. Involuntary motor activity, including rare instances of tremor and convulsions, has been reported, usually with doses considerably higher than those recommended. Clinically significant respiratory depression has not been reported at recommended doses.

In post-marketing experience, the following additional undesirable effects have been reported: Body as a Whole: allergic reaction, Nervous System: headache, Psychiatric: hallucination, Skin and Appendages: pruritus, rash, urticaria.

Overdosage

The most common manifestation of overdosage of Vistaril is hypersedation. Other reported signs and symptoms were convulsions, stupor, nausea and vomiting. As in the management of overdosage with any drug, it should be borne in mind that multiple agents may have been taken.

If vomiting has not occurred spontaneously, it should be induced. Immediate gastric lavage is also recommended. General supportive care, including frequent monitoring of the vital signs and close observation of the patient, is indicated. Hypotension, though unlikely, may be controlled with intravenous fluids and vasopressors (do not use epinephrine as hydroxyzine counteracts its pressor action.) Caffeine and Sodium Benzoate Injection, USP, may be used to counteract central nervous system depressant effects.

There is no specific antidote. It is doubtful that hemodialysis would be of any value in the treatment of overdosage with hydroxyzine. However, if other agents such as barbiturates have been ingested concomitantly, hemodialysis may be indicated. There is no practical method to quantitate hydroxyzine in body fluids or tissue after its ingestion or administration.

DOSAGE

For symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested: in adults, 50–100 mg q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50–100 mg daily in divided doses.

For use in the management of pruritus due to allergic conditions such as chronic urticaria and atopic and contact dermatoses, and in histamine-mediated pruritus: in adults, 25 mg t.i.d. or q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50–100 mg daily in divided doses.

As a sedative when used as a premedication and following general anesthesia: 50–100 mg in adults, and 0.6 mg/kg in children.

When treatment is initiated by the intramuscular route of administration, subsequent doses may be administered orally.

As with all medications, the dosage should be adjusted according to the patient's response to therapy.

How is Vistaril Supplied

Vistaril Capsules (hydroxyzine pamoate equivalent to hydroxyzine hydrochloride)

25 mg: 100's (NDC 0069-5410-66), two-tone green capsules
50 mg: 100's (NDC 0069-5420-66), green and white capsules

Vistaril Oral Suspension (hydroxyzine pamoate equivalent to 25 mg hydroxyzine hydrochloride per teaspoonful-5 mL): 1 pint (473 mL) bottles (NDC 0069-5440-93) and 4 ounce (120 mL) bottles (NDC 0069-5440-97) in packages of 4.

Shake vigorously until product is completely resuspended.

BIBLIOGRAPHY

Available on request.

Rx only

LAB-0126-4.0
May 2014

PRINCIPAL DISPLAY PANEL - 25 mg 100 Capsule Bottle Label

NDC 0069-5410-66

100 Capsules

Vistaril®
(hydroxyzine pamoate)

25 mg*

Pfizer
Distributed by
Pfizer Labs
Division of Pfizer Inc, NY, NY 10017

PRINCIPAL DISPLAY PANEL - 50 mg 100 Capsule Bottle Label

NDC 0069-5420-66

100 Capsules

Vistaril®
(hydroxyzine pamoate)

50 mg*

Pfizer
Distributed by
Pfizer Labs
Division of Pfizer Inc, NY, NY 10017

PRINCIPAL DISPLAY PANEL

Image not
available

PRINCIPAL DISPLAY PANEL

Image not
available

Vistaril 
hydroxyzine pamoate capsule
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0069-5410
Route of Administration ORAL DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
HYDROXYZINE PAMOATE (HYDROXYZINE) HYDROXYZINE HYDROCHLORIDE 25 mg
Inactive Ingredients
Ingredient Name Strength
D&C YELLOW NO. 10  
FD&C GREEN NO. 3  
FD&C YELLOW NO. 6  
D&C RED NO. 33  
MAGNESIUM STEARATE  
SODIUM LAURYL SULFATE  
SUCROSE  
Product Characteristics
Color GREEN (two-tone green) Score no score
Shape CAPSULE Size 14mm
Flavor Imprint Code Vistaril;Pfizer;541
Contains         
Packaging
# Item Code Package Description
1 NDC:0069-5410-66 100 CAPSULE in 1 BOTTLE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
NDA NDA011459 11/28/1994
Vistaril 
hydroxyzine pamoate capsule
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0069-5420
Route of Administration ORAL DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
HYDROXYZINE PAMOATE (HYDROXYZINE) HYDROXYZINE HYDROCHLORIDE 50 mg
Inactive Ingredients
Ingredient Name Strength
D&C YELLOW NO. 10  
FD&C GREEN NO. 3  
FD&C YELLOW NO. 6  
D&C RED NO. 33  
MAGNESIUM STEARATE  
SODIUM LAURYL SULFATE  
SUCROSE  
Product Characteristics
Color GREEN, WHITE Score no score
Shape CAPSULE Size 14mm
Flavor Imprint Code Vistaril;Pfizer;542
Contains         
Packaging
# Item Code Package Description
1 NDC:0069-5420-66 100 CAPSULE in 1 BOTTLE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
NDA NDA011459 11/15/1968
Vistaril 
hydroxyzine pamoate capsule
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0069-5430
Route of Administration ORAL DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
HYDROXYZINE PAMOATE (HYDROXYZINE) HYDROXYZINE HYDROCHLORIDE 100 mg
Inactive Ingredients
Ingredient Name Strength
D&C YELLOW NO. 10  
FD&C GREEN NO. 3  
FD&C YELLOW NO. 6  
D&C RED NO. 33  
MAGNESIUM STEARATE  
SODIUM LAURYL SULFATE  
SUCROSE  
Product Characteristics
Color GREEN, GRAY Score no score
Shape CAPSULE Size 18mm
Flavor Imprint Code Vistaril;Pfizer;543
Contains         
Packaging
# Item Code Package Description
1 NDC:0069-5430-66 100 CAPSULE in 1 BOTTLE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
NDA NDA011459 11/15/1968 04/01/2004
Vistaril 
hydroxyzine pamoate suspension
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0069-5440
Route of Administration ORAL DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
HYDROXYZINE PAMOATE (HYDROXYZINE) HYDROXYZINE HYDROCHLORIDE 25 mg  in 5 mL
Inactive Ingredients
Ingredient Name Strength
CARBOXYMETHYLCELLULOSE SODIUM  
PROPYLENE GLYCOL  
SORBIC ACID  
SORBITOL  
WATER  
Product Characteristics
Color      Score     
Shape Size
Flavor LEMON Imprint Code
Contains         
Packaging
# Item Code Package Description
1 NDC:0069-5440-93 473 mL in 1 BOTTLE
2 NDC:0069-5440-97 4 BOTTLE in 1 PACKAGE
2 120 mL in 1 BOTTLE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
NDA NDA011795 06/03/1959 12/01/2009
Labeler - Pfizer Laboratories Div Pfizer Inc (134489525)
Establishment
Name Address ID/FEI Operations
Uniion Quimico Famaceutica S.A. 460940868 MANUFACTURE(0069-5440, 0069-5430, 0069-5420, 0069-5410)
Establishment
Name Address ID/FEI Operations
NEOLPHARMA, INC. 078709787 ANALYSIS(0069-5440, 0069-5430, 0069-5420, 0069-5410), MANUFACTURE(0069-5440, 0069-5430, 0069-5420, 0069-5410), PACK(0069-5440, 0069-5430, 0069-5420, 0069-5410)
Revised: 05/2014
 
Pfizer Laboratories Div Pfizer Inc
Hide
(web2)