Clinical data | |
---|---|
Trade names | Edronax, others |
Pregnancy category |
|
Routes of administration | By mouth |
Drug class | Norepinephrine reuptake inhibitor |
ATC code | |
Legal status | |
Legal status | |
Pharmacokinetic data | |
Bioavailability | ≥94% [2] [3] |
Protein binding | 97–98% [2] [3] |
Metabolism | Liver (CYP3A4-mediated) [2] |
Elimination half-life | 12–12.5 hours [2] [3] |
Excretion | Urine (78%; 9–10% unchanged) [2] [3] |
Identifiers | |
| |
CAS Number |
|
PubChem CID | |
DrugBank | |
ChemSpider | |
UNII |
|
KEGG | |
ChEMBL | |
Chemical and physical data | |
Formula | C19H23NO3 |
Molar mass | 313.397 g·mol−1 |
3D model (JSmol) | |
Chirality | Racemate |
| |
| |
(what is this?) (verify) |
Reboxetine, sold under the brand name Edronax among others, is a selective norepinephrine reuptake inhibitor (sNRI) medication marketed as an antidepressant by Pfizer for use in the treatment of major depressive disorder, although it has also been used off-label for panic disorder and attention deficit hyperactivity disorder (ADHD). [4] It is approved for use in many countries worldwide, but has not been approved for use in the United States. [5]
There has been much debate as to whether reboxetine is more efficacious than placebo in the treatment of depression. According to a 2009 meta-analysis of 12 second-generation antidepressants, reboxetine was no more effective than placebo, and was "significantly less" effective and less acceptable than the other drugs in treating the acute-phase of adults with unipolar major depression. [6]
The British MHRA said in September 2011 that the study had several limitations, and that "Overall the balance of benefits and risks for reboxetine remains positive in its authorised indication." [7] A UK and Europe-wide review of available efficacy and safety data has confirmed that reboxetine has benefit over placebo in its authorised indication. Efficacy was clearly shown in patients with severe or very severe depression. [7]
According to a systematic review and meta-analysis by IQWiG, including unpublished data, published data on reboxetine overestimated the benefit of reboxetine versus placebo by up to 115% and reboxetine versus SSRIs by up to 23%, and also underestimated harm, concluding that reboxetine was an ineffective and potentially harmful antidepressant. The study also showed that nearly three quarters of the data on patients who took part in trials of reboxetine had not been published by Pfizer. [5]
A 2018 systematic review and network meta-analysis comparing the efficacy and acceptability of 21 antidepressant drugs concluded that reboxetine was more effective than placebo but significantly less efficacious than other antidepressants tested. [8]
In a randomised double-blind placebo-controlled trial reboxetine significantly improved the symptoms of panic disorder. [9] Another randomised controlled trial that compared paroxetine to reboxetine found that paroxetine significantly outperformed reboxetine as a treatment for panic disorder. [10] Despite this discouraging finding an open-label trial examining the efficacy of reboxetine in SSRI-resistant panic disorder demonstrated significant benefit from reboxetine treatment. [11]
Numerous clinical trials have provided support for the efficacy of reboxetine in the treatment of attention deficit hyperactivity disorder (ADHD) in both the short [12] [13] [14] [15] and long-term [16] [17] and in both children/adolescents [13] [14] [16] [17] and adults. [12] [15]
A case series and open-label pilot study demonstrated the efficacy of reboxetine in treating bulimia nervosa. [18] [19] Reboxetine may also have efficacy in treating therapy-resistant paediatric nocturnal enuresis. [20] A pilot study demonstrated the efficacy of reboxetine in the treatment of narcolepsy. [21] Individual trials and meta-analysis suggest that reboxetine can attenuate antipsychotic-induced weight gain [22] [23] and there is some evidence of a benefit on depressive, and possibly other symptoms of schizophrenia when added to antipsychotic treatment. [24] [23]
Reboxetine is contraindicated in narrow-angle glaucoma, cardiovascular disease, epilepsy, bipolar disorder, urinary retention, prostatic hypertrophy, those hypersensitive to reboxetine or any of its excipients. [2] [25]
There is conflicting information regarding use with MAOIs: one says the combination is possible with monitoring of side effects [26] but the product informations indicate them as contraindicated. [2]
Very common (>10% incidence) adverse effects include insomnia, dizziness, dry mouth, constipation, nausea, and excessive sweating. [27]
Common (1–10%) adverse effects include loss of appetite, agitation, anxiety, headache, restlessness, tingling sensations, distorted sense of taste, difficulty with seeing near or far (problems with accommodation), fast heart beat, heart palpitations, relaxing of blood vessels leading to low blood pressure, high blood pressure, vomiting, rash, sensation of incomplete bladder emptying, urinary tract infection, painful or difficult urination, urinary retention, erectile dysfunction, ejaculatory pain or delay, and chills. [27]
A 2009 meta-analysis found that reboxetine was significantly less well tolerated than the other 11 second-generation antidepressants compared in the analysis. [6]
Reboxetine is considered a relatively low-risk antidepressant in overdose. [28] The symptoms are as follows: [28]
Because of its reliance on CYP3A4, reboxetine O-desethylation is markedly inhibited by papaverine and ketoconazole. [29] It weakly inhibits CYP2D6 and CYP3A4. [27] Reboxetine is an intermediate-level inhibitor of P-glycoprotein, which gives it the potential to interact with ciclosporin, tacrolimus, paroxetine, sertraline, quinidine, fluoxetine, fluvoxamine. [30]
Site | Ki (nM) |
---|---|
SERT | 273.5 |
NET | 13.4 |
DAT | >10,000 |
5-HT1A | >10,000 |
5-HT1B | >10,000 |
5-HT1D | >10,000 |
5-HT2A | >10,000 |
5-HT2C | 457 |
α1A | 11,900 |
α2A | >10,000 |
D2 | >10,000 |
D3 | >10,000 |
H1 | 312 |
mACh | 6,700 |
nACh | ND |
GIRK | ND |
Reboxetine is a fairly selective norepinephrine reuptake inhibitor (NRI), with approximately 20-fold selectivity for the norepinephrine transporter (NET) over the serotonin transporter (SERT). [31] Despite this selectivity, reboxetine does slightly inhibit the reuptake of serotonin at therapeutic doses. [33] It does not interact with or inhibit the dopamine transporter (DAT). [31] [32]
Reboxetine has been found to inhibit both brain and cardiac GIRKs, a characteristic it shares with the NRI atomoxetine. [34]
Both the (R,R)-(–) and (S,S)-(+)-enantiomers of reboxetine are predominantly metabolized by the CYP3A4 isoenzyme. [29] The primary metabolite of reboxetine is O-desethylreboxetine, and there are also three minor metabolites—Phenol A, Phenol B, and UK1, Phenol B being the most minor. [29]
Reboxetine has two chiral centers. Thus, four stereoisomers may exist, the (R,R)-, (S,S)-, (R,S)-, and (S,R)-isomers. The active ingredient of reboxetine is a racemic mixture of two enantiomers, the (R,R)-(–)- and (S,S)-(+)-isomer. [35]
Reboxetine was discovered at Farmitalia-Carlo Erba and was first published in 1984; Farmitalia did the first clinical studies. [36] [37] Farmitalia was acquired by Pharmacia in 1993, [38] and Pharmacia in turn was acquired by Pfizer in 2003. [39]
It was first approved in Europe in 1997 and was provisionally approved by the FDA in 1999. [40] In 2001 the FDA issued Pfizer a "not approvable" letter based on clinical trials the FDA had required when it issued the preliminary approval letter. [41] [42]
In 2010, the German Institute for Quality and Efficiency in Health Care (IQEHC) published results of a meta-analysis of clinical trial data for reboxetine in acute depression, which included data on about 3,000 subjects that Pfizer had never published but had mentioned; IQEHC had combed through Pfizer's publications and reboxetine approvals and had determined this data was missing from the publication record. The analysis of the complete data set yielded a result that reboxetine was not more effective than placebo but had more side effects than placebo and more than fluoxetine; the paper led to widespread and sharp criticism of Pfizer, and stronger calls for publication of all clinical trial data. [5] [40] [43]
Edronax is the brand name of reboxetine in every English-speaking country that has approved it for clinical use. Brand names include (where † denotes a product that is no longer marketed): [4]
Antidepressants are a class of medications used to treat major depressive disorder, anxiety disorders, chronic pain, and addiction.
Tricyclic antidepressants (TCAs) are a class of medications that are used primarily as antidepressants. TCAs were discovered in the early 1950s and were marketed later in the decade. They are named after their chemical structure, which contains three rings of atoms. Tetracyclic antidepressants (TeCAs), which contain four rings of atoms, are a closely related group of antidepressant compounds.
Sertraline, sold under the brand name Zoloft among others, is an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class. The effectiveness of sertraline for depression is similar to that of other antidepressants, and the differences are mostly confined to side effects. Sertraline is better tolerated than the older tricyclic antidepressants. Sertraline is effective for panic disorder, social anxiety disorder, generalized anxiety disorder, and obsessive–compulsive disorder (OCD). Although approved for post-traumatic stress disorder (PTSD), sertraline leads to only modest improvement in this condition. Sertraline also alleviates the symptoms of premenstrual dysphoric disorder and can be used in sub-therapeutic doses or intermittently for its treatment.
Venlafaxine, sold under the brand name Effexor among others, is an antidepressant medication of the serotonin–norepinephrine reuptake inhibitor (SNRI) class. It is used to treat major depressive disorder, generalized anxiety disorder, panic disorder, and social anxiety disorder. Studies have shown that venlafaxine improves post-traumatic stress disorder (PTSD). It may also be used for chronic neuropathic pain. It is taken orally. It is also available as the salt venlafaxine besylate in an extended-release formulation.
Serotonin–norepinephrine reuptake inhibitors (SNRIs) are a class of antidepressant medications used to treat major depressive disorder (MDD), anxiety disorders, social phobia, chronic neuropathic pain, fibromyalgia syndrome (FMS), and menopausal symptoms. Off-label uses include treatments for attention-deficit hyperactivity disorder (ADHD), and obsessive–compulsive disorder (OCD). SNRIs are monoamine reuptake inhibitors; specifically, they inhibit the reuptake of serotonin and norepinephrine. These neurotransmitters are thought to play an important role in mood regulation. SNRIs can be contrasted with the selective serotonin reuptake inhibitors (SSRIs) and norepinephrine reuptake inhibitors (NRIs), which act upon single neurotransmitters.
Atomoxetine, sold under the brand name Strattera among others, is a selective norepinephrine reuptake inhibitor (sNRI) medication used to treat attention deficit hyperactivity disorder (ADHD) and, to a lesser extent, cognitive disengagement syndrome (CDS). It may be used alone or along with stimulant medication. It enhances the executive functions of self-motivation, sustained attention, inhibition, working memory, reaction time, and emotional self-regulation. Use of atomoxetine is only recommended for those who are at least six years old. It is taken orally. The effectiveness of atomoxetine is comparable to the commonly prescribed stimulant medication methylphenidate.
A norepinephrine reuptake inhibitor or noradrenaline reuptake inhibitor or adrenergic reuptake inhibitor (ARI), is a type of drug that acts as a reuptake inhibitor for the neurotransmitters norepinephrine (noradrenaline) and epinephrine (adrenaline) by blocking the action of the norepinephrine transporter (NET). This in turn leads to increased extracellular concentrations of norepinephrine and epinephrine and therefore can increase adrenergic neurotransmission.
Viloxazine, sold under the brand name Qelbree among others, is a selective norepinephrine reuptake inhibitor (sNRI) medication which is used in the treatment of attention deficit hyperactivity disorder (ADHD) in children and adults. It was marketed for almost 30 years as an antidepressant for the treatment of depression before being discontinued and subsequently repurposed as a treatment for ADHD. Viloxazine is taken orally. It was used as an antidepressant in an immediate-release form and is used in ADHD in an extended-release form, latterly with comparable effectiveness to atomoxetine and methylphenidate.
Milnacipran 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.
Attention deficit hyperactivity disorder management options are evidence-based practices with established treatment efficacy for ADHD. Approaches that have been evaluated in the management of ADHD symptoms include FDA-approved pharmacologic treatment and other pharmaceutical agents, psychological or behavioral approaches, combined pharmacological and behavioral approaches, cognitive training, neurofeedback, neurostimulation, physical exercise, nutrition and supplements, integrative medicine, parent support, and school interventions. Based on two 2024 systematic reviews of the literature, FDA-approved medications and to a lesser extent psychosocial interventions have been shown to improve core ADHD symptoms compared to control groups.
Vilazodone, sold under the brand name Viibryd among others, is a medication used to treat major depressive disorder. It is classified as a serotonin modulator and stimulator and is taken by mouth.
NS-2359 (GSK-372475) is a serotonin-norepinephrine-dopamine reuptake inhibitor. It was under development by GlaxoSmithKline (GSK) as an antidepressant, but was discontinued in 2009 when phase II clinical trials showed the drug was not effective and not well tolerated. The results did not support further effort by the company. NS-2359 was also in clinical trials for the treatment of ADHD, phase II having been completed in 2007. A phase I clinical trial exploring the effect of NS-2359 on cocaine-dependent individuals was completed in 2002.
Vortioxetine, sold under the brand name Trintellix and Brintellix among others, is an antidepressant of the serotonin modulator and stimulator (SMS) class. Its effectiveness is viewed as similar to that of other antidepressants. It is taken orally.
Levomilnacipran is an antidepressant which was approved in the United States in 2013 for the treatment of major depressive disorder (MDD) in adults. It is the levorotatory enantiomer of milnacipran, and has similar effects and pharmacology, acting as a serotonin–norepinephrine reuptake inhibitor (SNRI).
Selective serotonin reuptake inhibitors (SSRIs) are a class of drugs that are typically used as antidepressants in the treatment of major depressive disorder, anxiety disorders, and other psychological conditions.
Esreboxetine (developmental code names AXS-14, PNU-165442G) is a selective norepinephrine reuptake inhibitor which was under development by Pfizer for the treatment of neuropathic pain and fibromyalgia but failed to show significant benefit over currently available medications and was discontinued. It is the (S,S)-(+)-enantiomer of reboxetine and is even more selective as a norepinephrine reuptake inhibitor in comparison.
Edivoxetine is a drug which acts as a selective norepinephrine reuptake inhibitor and was under development by Eli Lilly for attention-deficit disorder (ADD) and as an antidepressant treatment. It was in phase III clinical trials in 2012 for major depressive disorder, but failed to get approval.
Centanafadine (INN) (former developmental code name EB-1020) is a serotonin-norepinephrine-dopamine reuptake inhibitor (SNDRI) that began its development with Euthymics Bioscience after they acquired DOV Pharmaceutical. It was developed as a treatment for attention-deficit hyperactivity disorder (ADHD) and inhibits the reuptake of norepinephrine, dopamine, and serotonin with an IC50 ratio of 1:6:14, respectively. In 2011, Euthymics Bioscience spun off its development of centanafadine to a new company called Neurovance. In March 2017, Otsuka Pharmaceutical acquired Neurovance and the rights to centanafadine. As of January 2018, Otsuka's pipeline indicates it is in Phase II and III clinical trials for a number of different applications to medical conditions.
Dextromethorphan/bupropion (DXM/BUP), sold under the brand name Auvelity, is a combination medication for the treatment of major depressive disorder (MDD). Its active components are dextromethorphan (DXM) and bupropion. Patients who stayed on the medication had an average of 11% greater reduction in depressive symptoms than placebo in an FDA approval trial. It is taken as a tablet by mouth.
Selective norepinephrine reuptake inhibitors (sNRIs) are a class of drugs that have been marketed as antidepressants and are used for various mental disorders, mainly depression and attention deficit hyperactivity disorder (ADHD). The norepinephrine transporter (NET) serves as the fundamental mechanism for the inactivation of noradrenergic signaling because of the NET termination in the reuptake of norepinephrine (NE). The selectivity and mechanism of action for the NRI drugs remain mostly unresolved and, to date, only a limited number of NRI-selective inhibitors are available. The first commercially available selective NRI was the drug reboxetine (Edronax), developed as a first-line therapy for major depressive disorder. Atomoxetine (Strattera) is another potent and selective NRI which is also effective and well tolerated for the treatment of ADHD in adults; it may also be a new treatment option for adults with ADHD, particularly for those patients at risk of substance abuse.
{{cite book}}
: |work=
ignored (help)