hydroxyzine pamoate

INDICATIONS AND USAGE 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.

DOSAGE AND ADMINISTRATION 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 to 100 mg four times a day; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 to 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 three times a day or four times a day.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 to 100 mg daily in divided doses. As a sedative when used as a premedication and following general anesthesia: 50 to 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.

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 mg to 100 mg q.i.d.; children under 6 years, 50 mg daily in divided doses; and over 6 years, 50 mg to 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 mg to 100 mg daily in divided doses. As a sedative when used as a premedication and following general anesthesia: 50 mg to 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.

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 is contraindicated in patients with a prolonged QT interval. Hydroxyzine pamoate is contraindicated for patients who have shown a previous hypersensitivity to any component of this medication. Hydroxyzine is contraindicated in patients with known hypersensitivity to hydroxyzine products, and in patients with known hypersensitivity to cetirizine hydrochloride or levocetirizine hydrochloride.

ADVERSE REACTIONS Side effects reported with the administration of hydroxyzine pamoate are usually mild and transitory in nature. Skin and Appendages: Oral hydroxyzine hydrochloride is associated with Acute Generalized Exanthematous Pustulosis (AGEP) and 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. Cardiac System: QT prolongation,Torsade de Pointes. 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. To report SUSPECTED ADVERSE EVENTS, contact Impax Laboratories, Inc. at 1-800-934-6729 or FDA at 1-800-FDA-1088 or http://www.fda.gov/ for voluntary reporting of adverse reactions.

DESCRIPTION Hydroxyzine pamoate, USP 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). It has the following structural formula: C 21 H 27 ClN 2 O 2 •C 23 H 16 O 6 M.W. 763.27 Hydroxyzine pamoate capsules, USP are administered in doses equivalent to 25 mg, 50 mg or 100 mg of hydroxyzine hydrochloride. In addition, each capsule contains the following inactive ingredients: croscarmellose sodium, magnesium stearate, and pregelatinized corn starch. The 25 mg also contains anhydrous lactose. The 50 mg and 100 mg also contain lactose monohydrate. The capsule shell ingredients for the 25 mg capsule are D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1, FD&C Red No. 40, FD&C Yellow No. 6, gelatin, and titanium dioxide. The 50 mg capsule shell contains D&C Red No. 33, D&C Yellow No. 10, FD&C Yellow No. 6, gelatin, and titanium dioxide. The 100 mg capsule shell contains D&C Red No. 28, D&C Red No. 33, D&C Yellow No. 10, FD&C Blue No. 1, FD&C Red No. 40, gelatin, and titanium dioxide. The edible imprinting ink on the 25 mg, 50 mg and 100 mg capsules contains black iron oxide, D&C Yellow No. 10 aluminum lake, FD&C Blue No. 1 aluminum lake, FD&C Blue No. 2 aluminum lake, FD&C Red No. 40 aluminum lake, propylene glycol, and shellac glaze. Structural Formula

OVERDOSAGE The most common manifestation of overdosage of hydroxyzine pamoate 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. Hydroxyzine overdose may cause QT prolongation and Torsade de Pointes. ECG monitoring is recommended in cases of hydroxyzine overdose. 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 SUPPLIED Hydroxyzine pamoate capsules, USP (hydroxyzine pamoate, USP equivalent to hydroxyzine hydrochloride), 25 mg are available as light yellow opaque cap and pink opaque body filled with yellow powder, imprinted in black ink stylized “barr” over “323” on one piece and “25” on the other piece, packaged in bottles of 30 (NDC 76420-920-30 repackaged from NDC 0555-0323-XX), 60 (NDC 76420-920-60 repackaged from NDC 0555-0323-XX), 90 (NDC 76420-920-90 repackaged from NDC NDC 0555-0323-XX), 100 (NDC 76420-920-01 relabeled from NDC 0555-0323-02) and 500 (NDC 76420-920-05 relabeled from NDC 0555-0323-04) capsules. Hydroxyzine pamoate capsules, USP (hydroxyzine pamoate, USP equivalent to hydroxyzine hydrochloride), 50 mg are available as light yellow opaque cap and maroon opaque body filled with yellow powder, imprinted in black ink stylized “barr” over “302” on one piece and “50” on the other piece, packaged in bottles of 30 (NDC 76420-921-30 repackaged from NDC 0555-0302-XX), 60 (NDC 76420-921-60 repackaged from NDC 0555-0302-XX), 90 (NDC 76420-921-90 repackaged from NDC NDC 0555-0302-XX), 100 (NDC 76420-921-01 relabeled from NDC 0555-0302-02) and 500 (NDC 76420-921-05 relabeled from NDC 0555-0302-04) capsules. Hydroxyzine pamoate capsules, USP (hydroxyzine pamoate, USP equivalent to hydroxyzine hydrochloride), 100 mg are available as light yellow opaque cap and pink opaque body filled with yellow powder, imprinted in black ink stylized “barr” over “324” on one piece and “100” on the other piece, packaged in bottles of 30 (NDC 76420-922-30 repackaged from NDC 0555-0324-XX), 60 (NDC 76420-922-60 repackaged from NDC 0555-0324-XX), 90 (NDC 76420-922-90 repackaged from NDC NDC 0555-0324-XX), and 100 (NDC 76420-922-01 relabeled from NDC 0555-0324-02) capsules. Dispense in a tight, light-resistant container as defined in the USP, with a child-resistant closure (as required). Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. Keep this and all medications out of the reach of children. Relabeled and Repackaged by: Enovachem PHARMACEUTICALS Torrance, CA 90501