DESCRIPTION

Benzonatate, a non-narcotic oral antitussive agent, is 2, 5, 8, 11, 14, 17, 20, 23, 26-nonaoxaoctacosan-28-yl p-(butylamino) benzoate; with a molecular weight of 603.00 (av).

C30H53NO11 (av.) 603.00 (av.)

Each capsule, for oral administration, contains 150 mg of benzonatate, USP.

In addition, each capsule contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose cellulose, hydroxypropyl cellulose, microcrystalline cellulose, and silicon dioxide. Capsule shell is composed of gelatin, titanium dioxide, FD&C Blue #1 and D&C Red #28. Imprinting ink is composed of black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, purified water, shellac and strong ammonia solution.

CLINICAL PHARMACOLOGY

Benzonatate acts peripherally by anesthetizing the stretch receptors located in the respiratory passages, lungs, and pleura by dampening their activity and thereby reducing the cough reflex at its source. It begins to act within 15 to 20 minutes and its effect lasts for 3 to 8 hours. Benzonatate has no inhibitory effect on the respiratory center in recommended dosage.

INDICATIONS AND USAGE

ZONATUSSTM (benzonatate capsules, USP) is indicated for the symptomatic relief of cough.

CONTRAINDICATIONS

Hypersensitivity to benzonatate or related compounds.

WARNINGS

Severe hypersensitivity reactions (including bronchospasm, laryngospasm and cardiovascular collapse) have been reported which are possibly related to local anesthesia from sucking or chewing the capsule instead of swallowing it. Severe reactions have required intervention with vasopressor agents and supportive measures. Isolated instances of bizarre behavior, including mental confusion and visual hallucinations, have also been reported in patients taking benzonatate in combination with other prescribed drugs.

PRECAUTIONS

Benzonatate is chemically related to anesthetic agents of the para-amino-benzoic acid class (e.g., procaine; tetracaine) and has been associated with adverse CNS effects possibly related to a prior sensitivity to related agents or interaction with concomitant medication.

ADVERSE REACTIONS

Potential Adverse Reactions to benzonatate may include:

Hypersensitivity reactions including bronchospasm, laryngospasm, cardiovascular collapse possibly related to local anesthesia from chewing or sucking the capsule.

CNS: sedation; headache; dizziness; mental confusion; visual hallucinations.

GI: constipation, nausea, GI upset.

Dermatologic: pruritus; skin eruptions.

Other: nasal congestion; sensation of burning in the eyes; vague "chilly" sensation; numbness of the chest; hypersensitivity.

Rare instances of deliberate or accidental overdose have resulted in death.

OVERDOSAGE

Overdose may result in death.

The drug is chemically related to tetracaine and other topical anesthetics and shares various aspects of their pharmacology and toxicology. Drugs of this type are generally well absorbed after ingestion.

Signs And Symptoms

If capsules are chewed or dissolved in the mouth, oropharyngeal anesthesia will develop rapidly. CNS stimulation may cause restlessness and tremors which may proceed to clonic convulsions followed by profound CNS depression.

Treatment

Evacuate gastric contents and administer copious amounts of activated charcoal slurry. Even in the conscious patient, cough and gag reflexes may be so depressed as to necessitate special attention to protection against aspiration of gastric contents and orally administered materials. Convulsions should be treated with a short-acting barbiturate given intravenously and carefully titrated for the smallest effective dosage. Intensive support of respiration and cardiovascular-renal function is an essential feature of the treatment of severe intoxication from overdosage.

Do not use CNS stimulants.

DOSAGE AND ADMINISTRATION

Adults and Children over 10: Usual dose is one 150 mg capsule three times daily as required. If necessary, up to 600 mg daily may be given.

HOW SUPPLIED

ZONATUSSTM (benzonatate capsules USP, 150 mg) is supplied as opaque white body and opaque light blue cap imprinted "150" on the body and "ZON" on the cap, in black ink, in bottles of 100 capsules, NDC 59702-150-01 and in unit dose sample pouches for patient trial available only through physician offices, NDC 59702-150-12.

Store at 20º to 25º C (68º to 77ºF) [see USP Controlled Room Temperature].

Protect From Light

Dispense in a tight, light-resistant container as defined in the USP. Keep tightly closed.

Manufactured for:

Atley Pharmaceuticals, Inc.

Ashland, VA 23005

Manufactured by:

Mikart, Inc.

Atlanta, Georgia 30318

Code 1006B00

Rev. 10/09

PACKAGE LABEL - PRINCIPAL DISPLAY PANEL - 100 COUNT BOTTLE

NDC 59702-150-01

100 Capsules

ZONATUSSTM

(benzonatate Capsules, USP)

U.S. Patents Pending

Rx only

150 mg

Atley

PACKAGE LABEL - PRINCIPAL DISPLAY PANEL - 1 COUNT POUCH

NDC 59702-150-12

One Capsule

ZONATUSSTM

(benzonatate Capsule, USP)

Rx only

150 mg

Physician Sample

Not for resale

This package is not child-resistant

Code 1006B21-F

Rev. 10/09