Formoterol

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Not to be confused with Fenoterol.

Formoterol
File:Formoterol.svg
Formoterol molecular structure
File:Formoterol ball-and-stick model.png
Above (R,R)-(−)-formoterol
Below (S,S)-(+)-formoterol
Clinical data
Trade namesOxeze, Foradil, Symbicort, others
AHFS/Drugs.comMonograph
License data
Pregnancy
category
  • AU: B3
Routes of
administration		Inhalation (capsules for oral inhalation, DPI, MDI)
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • NZ: Prescription only
  • UK: POM (Prescription only)
  • US: ℞-only
  • EU: Rx-only[1]
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Protein binding61% to 64%
MetabolismLiver demethylation and glucuronidation (CYP2D6, CYP2C19, CYP2C9 and CYP2A6 involved)
Elimination half-life10 h
ExcretionKidney and fecal
Identifiers
  • (RR,SS)-N-[2-hydroxy-5-[1-hydroxy-2-[1-(4-methoxyphenyl) propan-2-ylamino]ethyl] phenyl]formamide
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
E number{{#property:P628}}
CompTox Dashboard (EPA)
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Chemical and physical data
FormulaC19H24N2O4
Molar mass344.411 g·mol−1
3D model (JSmol)
ChiralityRacemic mixture
  • O=CNc1cc(ccc1O)[C@@H](O)CN[C@H](C)Cc2ccc(OC)cc2
  • InChI=1S/C19H24N2O4/c1-13(9-14-3-6-16(25-2)7-4-14)20-11-19(24)15-5-8-18(23)17(10-15)21-12-22/h3-8,10,12-13,19-20,23-24H,9,11H2,1-2H3,(H,21,22)/t13-,19+/m1/s1 checkY
  • Key:BPZSYCZIITTYBL-YJYMSZOUSA-N checkY
  (verify)

Formoterol, also known as eformoterol, is a long-acting β2 agonist (LABA) used as a bronchodilator in the management of asthma and chronic obstructive pulmonary disease (COPD). Formoterol has an extended duration of action (up to 12 h) compared to short-acting β2 agonists such as salbutamol (albuterol), which are effective for 4 h to 6 h. Formoterol has a relatively rapid onset of action compared to other LABAs, and is effective within 2-3 minutes.[2] The 2022 Global Initiative for Asthma report [3] recommends a combination formoterol/inhaled corticosteroid inhaler as both a preventer and reliever treatment for asthma in adults. In children, a short-acting β2 adrenergic agonist (e.g., salbutamol) is still recommended.

It was patented in 1972 and came into medical use in 1998.[4] It is available as a generic medication.[5] It is also marketed in the combination formulations budesonide/formoterol and mometasone/formoterol.

Side effects

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In November 2005, the US Food and Drug Administration (FDA) released a health advisory alerting the public to findings that show the use of long-acting β2 agonists could lead to a worsening of wheezing symptoms in some patients.[6]

Nowadays, available long-acting β2 agonists include salmeterol, formoterol, bambuterol, and sustained-release oral salbutamol.

Combinations of inhaled steroids and long-acting bronchodilators are becoming more widespread – combination preparations include fluticasone/salmeterol and budesonide/formoterol.

Mechanism of action

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Inhaled formoterol works like other β2 agonists, causing bronchodilation by relaxing the smooth muscle in the airway so as to treat the exacerbation of asthma. It has also been reported to target tubulin, favorizing its polymerization.[7]

Society and culture

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Brand names

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File:Budesonide and formoterol inhaler.jpg
Inhaler for a powder based in budesonide and formoterol

Formoterol is marketed in three forms: a dry-powder inhaler (DPI), a metered-dose inhaler (MDI) and an inhalation solution, under various brand names including Atock, Atimos/Atimos Modulite, Foradil/Foradile, Fostair, Oxeze/Oxis, Perforomist and Symbicort.

In some countries, Perforomist is marketed by Viatris after Upjohn merged with Mylan to create Viatris.[8][9]

Uses and combinations

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References

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pnb:آمو دریا

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