Estas informações têm fins exclusivamente educacionais. Sempre consulte um profissional de saúde. Saiba mais

Formoterol Fumarate

Prescription

Nomes comerciais: Formoterol fumarate

Forma Farmacêutica
Inhaler
Via de Administração
RESPIRATORY (INHALATION)
Fabricante
Micro Labs Limited

About This Medication

11 DESCRIPTION Formoterol fumarate inhalation solution is supplied as 2 mL of formoterol fumarate inhalation solution packaged in a 3 mL single-use low-density polyethylene vial and overwrapped in a foil pouch . Each vial contains 2 mL of a clear, colorless solution composed of formoterol fumarate dihydrate, USP equivalent to 20 mcg of formoterol fumarate in an isotonic, sterile aqueous solution containing sodium chloride, pH adjusted between 4.5 and 5.5 with citric acid monohydrate and trisodium citrate dihydrate. The active component of formoterol fumarate inhalation solution is formoterol fumarate dihydrate, USP, a racemate. Formoterol fumarate dihydrate is a beta 2 -adrenergic bronchodilator. Its chemical name is(±)-2’-Hydroxy-5’-[(R*)-1-hydroxy-2-[[(R*)-p-methoxy- α -methylphenethyl]amino]ethyl]formanilide fumarate (2:1) (salt), dihydrate; its structural formula is: Formoterol fumarate dihydrate, USP has a molecular weight of 840.91 and its empirical formula is (C 19 H 24 N 2 O 4 ) 2 •C 4 H 4 O 4 •2H 2 O. Formoterol fumarate dihydrate, USP is a white or almost white or slightly yellow powder, which is freely soluble in dimethyl sulphoxide and in acetic acid, soluble in methanol, slightly soluble in 2-propanol, very slightly soluble in water, practically insoluble in acetonitrile and in diethyl ether. Formoterol fumarate inhalation solution does not require dilution prior to administration by nebulization. Like all other nebulized treatments, the amount delivered to the lungs will depend on patient factors and the nebulization system used and its performance. Using the PARI-LC Plus ® nebulizer (with a facemask or mouthpiece) connected to a PRONEB ® Ultra compressor under in vitro conditions, the mean delivered dose from the mouthpiece was approximately 7.3 mcg (37% of label claim). The mean nebulizer flow rate was 4 LPM and the nebulization time was 9 minutes. Formoterol fumarate inhalation solution should be administered from a standard jet nebulizer at adequate flow rates via a facemask or mouthpiece. formoterol-str.jpg

Princípios Ativos

Ingrediente Concentração
Formoterol Fumarate -

Indicações e Uso

1 INDICATIONS AND USAGE Formoterol fumarate inhalation solution is a long-acting beta 2 -adrenergic agonist (beta 2 -agonist) indicated for: Long-term, twice daily (morning and evening) administration in the maintenance treatment of bronchoconstriction in patients with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema. ( 1.1 ) Important limitations of use: Formoterol fumarate inhalation solution is not indicated to treat acute deteriorations of chronic obstructive pulmonary disease. ( 1.2 , 5.2 ) Formoterol fumarate inhalation solution is not indicated to treat asthma. ( 1.2 ) 1.1 Maintenance Treatment of COPD Formoterol fumarate inhalation solution is indicated for the long-term, twice daily (morning and evening) administration in the maintenance treatment of bronchoconstriction in patients with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema. 1.2 Important Limitations of Use Formoterol fumarate inhalation solution is not indicated to treat acute deteriorations of chronic obstructive pulmonary disease [see WARNINGS AND PRECAUTIONS ( 5.2 )]. Formoterol fumarate inhalation solution is not indicated to treat asthma. The safety and effectiveness of formoterol fumarate inhalation solution in asthma have not been established.

Como funciona

12.1 Mechanism of Action Formoterol fumarate is a long-acting, beta 2 -adrenergic receptor agonist (beta 2 -agonist). Inhaled formoterol fumarate acts locally in the lung as a bronchodilator. In vitro studies have shown that formoterol has more than 200-fold greater agonist activity at beta 2 -receptors than at beta 1 -receptors. Although beta 2 -receptors are the predominant adrenergic receptors in bronchial smooth muscle and beta 1 -receptors are the predominant receptors in the heart, there are also beta 2 -receptors in the human heart comprising 10% to 50% of the total beta-adrenergic receptors. The precise function of these receptors has not been established, but they raise the possibility that even highly selective beta 2 -agonists may have cardiac effects. The pharmacologic effects of beta 2 -adrenoceptor agonist drugs, including formoterol, are at least in part attributable to stimulation of intracellular adenyl cyclase, the enzyme that catalyzes the conversion of adenosine triphosphate (ATP) to cyclic-3', 5'-adenosine monophosphate (cyclic AMP). Increased cyclic AMP levels cause relaxation of bronchial smooth muscle and inhibition of release of mediators of immediate hypersensitivity from cells, especially from mast cells. In vitro tests show that formoterol is an inhibitor of the release of mast cell mediators, such as histamine and leukotrienes, from the human lung. Formoterol also inhibits histamine-induced plasma albumin extravasation in anesthetized guinea pigs and inhibits allergen-induced eosinophil influx in dogs with airway hyper-responsiveness. The relevance of these in vitro and animal findings to humans with COPD is unknown.

Posologia e Administração

2 DOSAGE AND ADMINISTRATION The recommended dose of formoterol fumarate inhalation solution is one 20 mcg unit-dose vial administered twice daily (morning and evening) by nebulization. A total daily dose greater than 40 mcg is not recommended. Formoterol fumarate inhalation solution should be administered by the orally inhaled route via a standard jet nebulizer connected to an air compressor. The safety and efficacy of formoterol fumarate inhalation solution have been established in clinical trials when administered using the PARI-LC Plus ® nebulizer (with a facemask or mouthpiece) and the PRONEB ® Ultra compressor. The safety and efficacy of formoterol fumarate inhalation solution delivered from non-compressor based nebulizer systems have not been established. Formoterol fumarate inhalation solution should always be stored in the foil pouch, and only removed IMMEDIATELY BEFORE USE. Contents of any partially used container should be discarded. If the recommended maintenance treatment regimen fails to provide the usual response, medical advice should be sought immediately, as this is often a sign of destabilization of COPD. Under these circumstances, the therapeutic regimen should be re-evaluated and additional therapeutic options should be considered. The drug compatibility (physical and chemical), efficacy, and safety of formoterol fumarate inhalation solution when mixed with other drugs in a nebulizer have not been established. For oral inhalation only. One 20 mcg/2 mL vial every 12 hours. ( 2 ) For use with a standard jet nebulizer (with a facemask or mouthpiece) connected to an air compressor. ( 2 )

Side Effects Overview

6 ADVERSE REACTIONS Long-acting beta 2 -adrenergic agonists, such as formoterol fumarate, as monotherapy (without an inhaled corticosteroid) for asthma increase the risk of asthma-related events. Formoterol fumarate is not indicated for the treatment of asthma [see WARNINGS AND PRECAUTIONS ( 5.1 )]. Most common adverse reactions ( > 2% and more common than placebo) are diarrhea, nausea, nasopharyngitis, dry mouth, vomiting, dizziness, and insomnia ( 6.2 ) To report SUSPECTED ADVERSE REACTIONS, contact Micro Labs USA Inc., at 1-855-839-8195 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Beta 2 -Agonist Adverse Reaction Profile Adverse reactions to formoterol fumarate inhalation solution are expected to be similar in nature to other beta 2 -adrenergic receptor agonists including: angina, hypertension or hypotension, tachycardia, arrhythmias, nervousness, headache, tremor, dry mouth, muscle cramps, palpitations, nausea, dizziness, fatigue, malaise, insomnia, hypokalemia, hyperglycemia, and metabolic acidosis. 6.2 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adults with COPD The data described below reflect exposure to formoterol fumarate inhalation solution 20 mcg twice daily by oral inhalation in 586 patients, including 232 exposed for 6 months and 155 exposed for at least 1 year. Formoterol fumarate inhalation solution was studied in a 12-week, placebo-and active-controlled trial (123 subjects treated with formoterol fumarate inhalation solution) and a 52-week, active-controlled trial (463 subjects treated with formoterol fumarate inhalation solution). Patients were mostly Caucasians (88%) between 40 to 90 years old (mean, 64 years old) and had COPD, with a mean FEV 1 of 1.33 L. Patients with significant concurrent cardiac and other medical diseases were excluded from the trials. Table 1 shows adverse reactions from the 12-week, double-blind, placebo-controlled trial where the frequency was greater than or equal to 2% in the formoterol fumarate inhalation solution group and where the rate in the formoterol fumarate inhalation solution group exceeded the rate in the placebo group. In this trial, the frequency of patients experiencing cardiovascular adverse events was 4.1% for formoterol fumarate inhalation solution and 4.4% for placebo. There were no frequently occurring specific cardiovascular adverse events for formoterol fumarate inhalation solution (frequency greater than or equal to 1% and greater than placebo). The rate of COPD exacerbations was 4.1% for formoterol fumarate inhalation solution and 7.9% for placebo. TABLE 1 Number of patients with adverse reactions in the 12-week multiple-dose controlled clinical trial Adverse Reaction Formoterol Fumarate Inhalation Solution 20 mcg Placebo n (%) n (%) Total Patients 123 (100) 114 (100) Diarrhea 6 (4.9) 4 (3.5) Nausea 6 (4.9) 3 (2.6) Nasopharyngitis 4 (3.3) 2 (1.8) Dry Mouth 4 (3.3) 2 (1.8) Vomiting 3 (2.4) 2 (1.8) Dizziness 3 (2.4) 1 (0.9) Insomnia 3 (2.4) 0 0 Patients treated with formoterol fumarate inhalation solution 20 mcg twice daily in the 52-week open-label trial did not experience an increase in specific clinically significant adverse events above the number expected based on the medical condition and age of the patients. 6.3 Postmarketing Experience The following adverse reactions have been reported during post-approval use of formoterol fumarate inhalation solution. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Anaphylactic reactions, urticaria, angioedema (presenting as face, lip, tongue, eye, pharyngeal, or mouth edema), rash, and bronchospasm

Advertências e Precauções

Contraindicações

Farmacocinética

12.3 Pharmacokinetics Information on the pharmacokinetics of formoterol (dry powder and/or inhalation solution) in plasma and/or urine is available in healthy subjects as well as patients with chronic obstructive pulmonary disease after oral inhalation of doses at and above the therapeutic dose. Urinary excretion of unchanged formoterol was used as an indirect measure of systemic exposure. Plasma drug disposition data parallel urinary excretion, and the elimination half-lives calculated for urine and plasma are similar. Absorption Pharmacokinetic properties of formoterol fumarate were evaluated in 12 COPD patients following inhalation of single doses of formoterol fumarate inhalation solution containing 10, 20 and 244 mcg of formoterol fumarate (calculated on an anhydrous basis) and 12 mcg formoterol fumarate dry powder, through 36 hours after single-dose administration. Formoterol fumarate concentrations in plasma following the 10 and 20 mcg doses of formoterol fumarate inhalation solution and the 12 mcg dose of formoterol fumarate dry powder were undetectable or only detected sporadically at very low concentrations. Following a single 244 mcg dose of formoterol fumarate inhalation solution (approximately 12 times the recommended clinical dose), formoterol fumarate concentrations were readily measurable in plasma, exhibiting rapid absorption into plasma, and reaching a maximum drug concentration of 72 pg/mL within approximately 12 minutes of dosing. The mean amount of formoterol excreted unchanged in 24-hour urine following single oral inhalation doses of 10, 20, and 244 mcg formoterol fumarate inhalation solution were found to be 109.7 ng, 349.6 ng, and 3317.5 ng, respectively. These findings indicate a near dose proportional increase in systemic exposure within the dose range tested. When 12 mcg of a dry powder formulation of formoterol fumarate was given twice daily to COPD patients by oral inhalation for 12 weeks, the accumulation index, based on the urinary excretion of unchanged formoterol was 1.19 to 1.38. This suggests some accumulation of formoterol in plasma with multiple dosing. Although multiple-dose pharmacokinetic data is unavailable from formoterol fumarate inhalation solution, assumption of linear pharmacokinetics allows a reasonable prediction of minimal accumulation based on single-dose pharmacokinetics. As with many drug products for oral inhalation, it is likely that the majority of the inhaled formoterol fumarate delivered is swallowed and then absorbed from the gastrointestinal tract. Distribution The binding of formoterol to human plasma proteins in vitro was 61% to 64% at concentrations from 0.1 to 100 ng/mL. Binding to human serum albumin in vitro was 31% to 38% over a range of 5 to 500 ng/mL. The concentrations of formoterol used to assess the plasma protein binding were higher than those achieved in plasma following inhalation of a single 244 mcg dose of formoterol fumarate inhalation solution. Metabolism Formoterol is metabolized primarily by direct glucuronidation at either the phenolic or aliphatic hydroxyl group and O-demethylation followed by glucuronide conjugation at either phenolic hydroxyl groups. Minor pathways involve sulfate conjugation of formoterol and deformylation followed by sulfate conjugation. The most prominent pathway involves direct conjugation at the phenolic hydroxyl group. The second major pathway involves O-demethylation followed by conjugation at the phenolic 2'-hydroxyl group. In vitro studies showed that multiple drug-metabolizing enzymes catalyze glucuronidation (UGT1A1, 1A8, 1A9, 2B7 and 2B15 were the most predominant enzymes) and O-demethylation (CYP2D6, CYP2C19, CYP2C9 and CYP2A6) of formoterol. Formoterol did not inhibit CYP450 enzymes at therapeutically relevant concentrations. Some patients may be deficient in CYP2D6 or 2C19 or both. Whether a deficiency in one or both of these isozymes results in elevated systemic exposure to formoterol or systemic adverse effects has not been adequately explored. Excretion Following administration of single 10, 20, and 244 mcg formoterol fumarate inhalation solution doses (calculated on an anhydrous basis) delivered via nebulizer in 12 COPD patients, on average, about 1.1% to 1.7% of the dose was excreted in the urine as unchanged formoterol as compared to about 3.4% excreted unchanged following inhalation administration of 12 mcg of formoterol fumarate dry powder. Renal clearance of formoterol following inhalation administration of formoterol fumarate inhalation solution in these subjects was about 157 mL/min. Based on plasma concentrations measured following the 244 mcg dose, the mean terminal elimination half-life was determined to be 7 hours. Gender As reported for another formoterol fumarate inhalation formulation, upon correction for body weight, pharmacokinetics of formoterol fumarate did not differ significantly between males and females. Geriatric, Pediatric, Hepatic/Renal Impairment The pharmacokinetics of formoterol fumarate has not been studied in elderly and pediatric patient populations. The pharmacokinetics of formoterol fumarate has not been studied in subjects with hepatic or renal impairment.

Frequently Asked Questions

1 INDICATIONS AND USAGE Formoterol fumarate inhalation solution is a long-acting beta 2 -adrenergic agonist (beta 2 -agonist) indicated for: Long-term, twice daily (morning and evening) administration in the maintenance treatment of bronchoconstriction in patients with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema. ( 1.1 ) Important limitations of use: Formoterol fumarate inhalation solution is not indicated to treat acute deteriorations of chronic obstructive pulmonary disease. ( 1.2 , 5.2 ) Formoterol fumarate inhalation solution is not …

2 DOSAGE AND ADMINISTRATION The recommended dose of formoterol fumarate inhalation solution is one 20 mcg unit-dose vial administered twice daily (morning and evening) by nebulization. A total daily dose greater than 40 mcg is not recommended. Formoterol fumarate inhalation solution should be administered by the orally inhaled route via a standard jet nebulizer connected to an air compressor. The safety and efficacy of formoterol fumarate inhalation solution have been established in clinical trials when administered using the PARI-LC Plus …

5 WARNINGS AND PRECAUTIONS LABA as monotherapy (without inhaled corticosteroid) for asthma increases the risk of serious asthma-related events. ( 5.1 ) Do not initiate formoterol fumarate inhalation solution in acutely deteriorating patients. ( 5.2 ) Do not use for relief of acute symptoms. Concomitant short-acting beta 2 -agonists can be used as needed for acute relief. ( 5.2 ) Do not exceed the recommended dose. Excessive use of formoterol fumarate inhalation solution or use in conjunction with other medications …

4 CONTRAINDICATIONS Use of a LABA, including formoterol fumarate, without an inhaled corticosteroid is contraindicated in patients with asthma [see WARNINGS and PRECAUTIONS ( 5.1 )]. Formoterol fumarate is not indicated for the treatment of asthma. Use of a LABA, including formoterol fumarate, without an inhaled corticosteroid is contraindicated in patients with asthma. ( 4 )

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

Similar Inhaler Products

Browse all Inhaler products →

References & Data Sources

Aviso Médico

As informações nesta página têm fins exclusivamente educacionais e não devem ser usadas como substituto para aconselhamento médico profissional, diagnóstico ou tratamento.

Sempre busque o aconselhamento do seu médico ou outro profissional de saúde qualificado para quaisquer dúvidas que você possa ter sobre uma condição médica ou medicamento.

Fontes de dados: DailyMed (NLM), openFDA, MFDS

Medical Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.