Clemastine Fumarate

Prescription

Nombres comerciales: Clemastine Fumarate

Forma Farmacéutica

Tablet

Vía de Administración

ORAL

Fabricante

Teva Pharmaceuticals USA, Inc.

About This Medication

DESCRIPTION Clemastine belongs to the benzhydryl ether group of antihistaminic compounds. The chemical name is (+)-(2 R )-2-[2-[[( R )- p -Chloro-α-methyl-α-phenylbenzyl]-oxy]ethyl]-1-methylpyrrolidine fumarate (1:1). C 21 H 26 C1NO . C 4 H 4 O 4 M.W. 459.97 Each tablet for oral administration contains 2.68 mg of clemastine fumarate, USP. Inactive ingredients: colloidal silicon dioxide, corn starch, lactose monohydrate, povidone, pregelatinized starch and stearic acid. chemical structure for clemastine

Principios Activos

Ingrediente	Concentración
Clemastine Fumarate	-

Indicaciones y Uso

INDICATIONS AND USAGE Clemastine Fumarate Tablets USP, 2.68 mg are indicated for the relief of symptoms associated with allergic rhinitis such as sneezing, rhinorrhea, pruritus, and lacrimation. Clemastine Fumarate Tablets USP, 2.68 mg are also indicated for the relief of mild, uncomplicated allergic skin manifestations of urticaria and angioedema. It should be noted that clemastine fumarate is indicated for the dermatologic indications at the 2.68 mg dosage level only.

Dosificación y Administración

DOSAGE AND ADMINISTRATION DOSAGE SHOULD BE INDIVIDUALIZED ACCORDING TO THE NEEDS AND RESPONSE OF THE PATIENT. Clemastine Fumarate Tablets 2.68 mg The maximum recommended dosage is one tablet three times daily. Many patients respond favorably to a single dose which may be repeated as required, but not to exceed three tablets daily.

Side Effects Overview

ADVERSE REACTIONS Transient drowsiness, the most common adverse reaction associated with clemastine fumarate, occurs relatively frequently and may require discontinuation of therapy in some instances. Antihistaminic Compounds It should be noted that the following reactions have occurred with one or more antihistamines and, therefore, should be kept in mind when prescribing drugs belonging to this class, including clemastine. The most frequent adverse reactions are italicized. General: Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of the mouth, nose, and throat. Cardiovascular System: Hypotension, headache, palpitations, tachycardia, extrasystoles. Hematologic System: Hemolytic anemia, thrombocytopenia, agranulocytosis. Nervous System: Sedation, sleepiness, dizziness, disturbed coordination , fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, convulsions. GI System: Epigastric distress , anorexia, nausea, vomiting, diarrhea, constipation. GU System: Urinary frequency, difficult urination, urinary retention, early menses. Respiratory System: Thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness.

Advertencias y Precauciones

WARNINGS Antihistamines should be used with considerable caution in patients with: narrow angle glaucoma, stenosing peptic ulcer, pyloroduodenal obstruction, symptomatic prostatic hypertrophy, and bladder neck obstruction. Usage in Children Safety and efficacy of clemastine fumarate have not been established in children under the age of 12 years. Usage in Pregnancy Experience with this drug in pregnant women is inadequate to determine whether there exists a potential for harm to the developing fetus. Usage with CNS Depressants Clemastine has additive effects with alcohol and other CNS depressants (hypnotics, sedatives, tranquilizers, etc.). Usage in Activities Requiring Mental Alertness Patients should be warned about engaging in activities requiring mental alertness such as driving a car or operating appliances, machinery, etc. Usage in the Elderly (approximately 60 years or older) Antihistamines are more likely to cause dizziness, sedation, and hypotension in elderly patients.

Contraindicaciones

CONTRAINDICATIONS Usage in Nursing Mothers Because of the higher risk of antihistamines for infants generally and for newborns and prematures in particular, antihistamine therapy is contraindicated in nursing mothers. Usage in Lower Respiratory Disease Antihistamines should not be used to treat lower respiratory tract symptoms including asthma. Antihistamines are also contraindicated in the following conditions: Hypersensitivity to clemastine fumarate or other antihistamines of similar chemical structure. Monoamine oxidase inhibitor therapy (see Drug Interactions section).

Frequently Asked Questions

INDICATIONS AND USAGE Clemastine Fumarate Tablets USP, 2.68 mg are indicated for the relief of symptoms associated with allergic rhinitis such as sneezing, rhinorrhea, pruritus, and lacrimation. Clemastine Fumarate Tablets USP, 2.68 mg are also indicated for the relief of mild, uncomplicated allergic skin manifestations of urticaria and angioedema. It should be noted that clemastine fumarate is indicated for the dermatologic indications at the 2.68 mg dosage level only.

DOSAGE AND ADMINISTRATION DOSAGE SHOULD BE INDIVIDUALIZED ACCORDING TO THE NEEDS AND RESPONSE OF THE PATIENT. Clemastine Fumarate Tablets 2.68 mg The maximum recommended dosage is one tablet three times daily. Many patients respond favorably to a single dose which may be repeated as required, but not to exceed three tablets daily.

WARNINGS Antihistamines should be used with considerable caution in patients with: narrow angle glaucoma, stenosing peptic ulcer, pyloroduodenal obstruction, symptomatic prostatic hypertrophy, and bladder neck obstruction. Usage in Children Safety and efficacy of clemastine fumarate have not been established in children under the age of 12 years. Usage in Pregnancy Experience with this drug in pregnant women is inadequate to determine whether there exists a potential for harm to the developing fetus. Usage with CNS Depressants Clemastine has additive effects …

CONTRAINDICATIONS Usage in Nursing Mothers Because of the higher risk of antihistamines for infants generally and for newborns and prematures in particular, antihistamine therapy is contraindicated in nursing mothers. Usage in Lower Respiratory Disease Antihistamines should not be used to treat lower respiratory tract symptoms including asthma. Antihistamines are also contraindicated in the following conditions: Hypersensitivity to clemastine fumarate or other antihistamines of similar chemical structure. Monoamine oxidase inhibitor therapy (see Drug Interactions section).

Clemastine Fumarate is a prescription medication. You will need a valid prescription from a licensed healthcare provider.

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References & Data Sources

• DailyMed — Clemastine Fumarate drug label (National Library of Medicine)
• openFDA — Clemastine Fumarate label data (U.S. Food & Drug Administration)
• RxNorm — RXCUI 857461 (NLM Normalized Drug Names)
• NDC Directory — Clemastine Fumarate (FDA National Drug Code)

Aviso Médico

La información en esta página tiene fines exclusivamente educativos y no debe utilizarse como sustituto del consejo médico profesional, diagnóstico o tratamiento.

Siempre consulte a su médico u otro proveedor de salud calificado ante cualquier pregunta que pueda tener sobre una condición médica o medicamento.

Fuentes de datos: DailyMed (NLM), openFDA, MFDS