Milnacipran

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Milnacipran
Top: (1S,2R)-milnacipran (L-milnacipran)
Bottom: (1R,2S)-milnacipran (D-milnacipran)
Clinical data
Trade namesIxel, Joncia, Savella
AHFS/Drugs.comMonograph
MedlinePlusa609016
Pregnancy
category
  • AU: B3
Routes of
administration		By mouth (tablets), capsules)
ATC code
Legal status
Legal status
Renal
Identifiers
  • (±)-(1R,2S)-rel-2-(Aminomethyl)-N,N-diethyl-1- phenylcyclopropane-1-carboxamide
JSmol)
ChiralityRacemic mixture
  • O=C(N(CC)CC)[C@@]2(c1ccccc1)[C@@H](CN)C2
  • InChI=1S/C15H22N2O/c1-3-17(4-2)14(18)15(10-13(15)11-16)12-8-6-5-7-9-12/h5-9,13H,3-4,10-11,16H2,1-2H3/t13-,15+/m1/s1 checkY
  • Key:GJJFMKBJSRMPLA-HIFRSBDPSA-N checkY
  (verify)

Milnacipran (trade names Ixel, Savella, Dalcipran, Toledomin) is a serotonin–norepinephrine reuptake inhibitor (SNRI) used in the clinical treatment of fibromyalgia. It is not approved for the clinical treatment of major depressive disorder in the US, but it is in other countries.

Medical uses

Depression

In a pooled analysis of 7 comparative trials with imipramine,[2] milnacipran and imipramine were shown to have comparable efficacy while milnacipran was significantly better tolerated. A pooled analysis of studies comparing milnacipran and SSRIs[3] concluded a superior efficacy for milnacipran with similar tolerability for milnacipran and SSRIs. A more recent meta-analysis of 6 studies involving more than 1,000 patients showed no distinction between milnacipran and SSRIs in efficacy or discontinuation rates, including discontinuation for side effects or lack of efficacy.[4] A meta-analysis of a total of 16 randomized controlled trials with more than 2200 patients[5] concluded that there were no statistically significant differences in efficacy, acceptability and tolerability when comparing milnacipran with other antidepressant agents. However, compared with TCAs, significantly fewer patients taking milnacipran dropped out due to adverse events. As with other antidepressants, 1 to 3 weeks may elapse before significant antidepressant action becomes clinically evident.

Impulse Control

Milnacipran was found to improve impulse control in rats, which has been linked to its activation of D1-like receptors in the infralimbic cortex.[6] Depression has been associated with increased impulsivity.

Fibromyalgia

During its development for fibromyalgia, milnacipran was evaluated utilizing a composite responder approach. To be considered as a responder for the composite ‘treatment of fibromyalgia’ endpoint, each patient had to show concurrent and clinically meaningful improvements in pain, physical function, and global impression of disease status. A systematic review in 2015 showed moderate relief for a minority of people with fibromyalgia. Milnacipran was associated with increased adverse events when discontinuing use of the drug.[7]

Social anxiety

There is some evidence that milnacipran may be effective for social anxiety.[8]

Contraindications

Administration of milnacipran should be avoided in individuals with the following:

Administration of milnacipran should be done with caution in individuals with the following:

Milnacipran should not be used during pregnancy because it may cross the placenta barrier and no clinical data exists on harmful effects in humans and animal studies. Milnacipran is contraindicated during lactation because it is excreted in the milk, and it is not known if it is harmful to the newborn.

Side effects

The most frequently occurring adverse reactions (≥ 5% and greater than placebo) were nausea, headache, constipation, dizziness, insomnia, hot flush, hyperhydrosis, vomiting, palpitations, heart rate increase, dry mouth, and hypertension [FDA Savella prescribing information]. Milnacipran can have a significant impact on sexual functions, including both a decrease in sexual desire and ability[

suicidal thoughts additive sedative/anxiolytic treatment is usually indicated.[9] However, several studies found that there seems to be no "activation syndrome" and no increased risk of suicidality in milnacipran therapy; instead it is said to reduce suicidality along with depressive symptoms.[10][11][12]

Interactions

Pharmacology

Pharmacodynamics

Milnacipran

benzodiazepine and opioid binding sites.[14][15][16]

Recently,

AZD3293 were in clinical trials for the treatment of Alzheimer's disease,[18]
but in both cases clinical trials were halted due to a lack of positive evidence of a favorable benefit to risk ratio and both were considered unlikely to return satisfactory results.

Pharmacokinetics

Milnacipran is well absorbed after oral dosing and has a bioavailability of 85%. Meals do not have an influence on the rapidity and extent of absorption. Peak plasma concentrations are reached 2 hours after oral dosing. The elimination half-life of 8 hours is not increased by liver impairment and old age, but by significant renal disease. Milnacipran is conjugated to the inactive glucuronide and excreted in the urine as unchanged drug and conjugate. Only traces of active metabolites are found.[16]

History

Milnacipran was first approved for the treatment of major depressive episodes in France in December 1996. It is currently marketed (as Ixel) for this indication in over 45 countries worldwide including several European countries such as Austria, Bulgaria, Finland, France, Portugal, and Russia. It is also available in Japan (as Toledomin) and Mexico (as Dalcipran). Cypress Bioscience bought the exclusive rights for approval and marketing of the drug for any purpose in the United States and Canada in 2003 from the manufacturer Laboratoires Pierre Fabre.

In January 2009 the

U.S. Food and Drug Administration (FDA) approved milnacipran (under the brand name Savella) only for the treatment of fibromyalgia, making it the third medication approved for this purpose in the United States. In July and November 2009, the European Medicines Agency refused marketing authorization for a milnacipran product (under the brand name Impulsor) for the treatment of fibromyalgia.[19]

References

  1. ^ Anvisa (2023-03-31). "RDC Nº 784 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 784 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-04-04). Archived from the original on 2023-08-03. Retrieved 2023-08-16.
  2. S2CID 27199308
    .
  3. S2CID 31546691
    .
  4. S2CID 27679241
    .
  5. PMID 19588396
    .
  6. S2CID 12806222
    .
  7. PMID 26482422
    .
  8. PMID 19300537
    .
  9. ^ "www.accessdata.fda.gov" (PDF).
  10. PMID 22247614
    .
  11. PMID 19721721
    .
  12. S2CID 173746
    .
  13. ^ "SAVELLA - milnacipran hydrochloride tablet, film coated". DailyMed. National Institute of Health.
  14. S2CID 46629043
    .
  15. S2CID 37407165
    .
  16. ^
    S2CID 45279690
    .
  17. PMID 25345508
    .
  18. PMID 25100992
    .
  19. ^ European Medicines Agency. "Questions and answers on the recommendati on for the refusal of the marketing authorisation for Milnacipran Pierre Fabre Médicament/Impulsor" (PDF). European Medicines Agency. Archived from the original (PDF) on 22 February 2014. Retrieved 30 May 2013.

External links

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