Macitentan 2.5mg dispersible tablets sugar free
Requires a prescription from a doctor or prescriber
Macitentan is a dual endothelin receptor antagonist used in the treatment of pulmonary arterial hypertension (PAH).[L35890] It was first approved by the FDA in 2013.
Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
Official medicine documents
Yellow Card
Report side effects (MHRA)
Drug safety updates
MHRA alerts for Macitentan
Safety monitoring data
Yellow Card reports
The MHRA Yellow Card scheme collects reports of suspected side effects from healthcare professionals and patients. View the Drug Analysis Profile (iDAP) for real-world adverse reaction data.
View Drug Analysis Profile
Suspected adverse reactions reported for Macitentan
Browse all iDAP reports
Interactive Drug Analysis Profiles for all medicines
Report a side effect
Submit a Yellow Card report to the MHRA
Data from the MHRA Yellow Card scheme. A reported reaction does not necessarily mean the medicine caused it. Contains public sector information licensed under the Open Government Licence v3.0.
EudraVigilance
The European Medicines Agency (EMA) collects suspected adverse reaction reports from across the EU/EEA through the EudraVigilance system. Search for safety data on this medicine.
View EudraVigilance report
Suspected adverse reactions reported for Macitentan
About EudraVigilance
Learn about EU pharmacovigilance and safety monitoring
EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
1 branded products available
MHRA licensed products
View all licensed products for Macitentan on the MHRA register
Opsumit 2.5mg dispersible tablets
Therapeutically similar medicines
Similarity is based on WHO Anatomical Therapeutic Chemical (ATC) classification and on a factual NHS dm+d therapeutic-grouping code prefix. Source data: NHS dm+d via TRUD (OGL v3.0), WHO ATC/DDD Index.
NHS prescribing volume and spending trends
Check stock at pharmacies and supply information
Pharmacy stock checkers
Search for this medicine at major UK pharmacy chains. These links open the retailer's own website — results depend on their current online catalogue.
Supply & safety information
Official UK regulator monitoring and safety alerts
Pharmacy links redirect to the retailer's own search and do not represent real-time stock levels. Shortage and safety information sourced from MHRA drug safety updates (gov.uk, Crown Copyright under OGL v3.0).
Codes for healthcare professionals and prescribing systems
These codes are used by healthcare IT systems and prescribers to identify this medicine.
NHS UK identifiers
Browse tools
SNOMED CT and dm+d codes from NHS TRUD (Technology Reference data Update Distribution), licensed under the Open Government Licence v3.0. ATC codes from the WHO Collaborating Centre for Drug Statistics Methodology (whocc.no).
Active and completed clinical studies from ClinicalTrials.gov
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine (NLM), National Institutes of Health (NIH). Data accessed via ClinicalTrials.gov API v2. Trial information is provided for research purposes and does not constitute medical advice.
Academic studies and reviews for this medicine's active substance
Showing the 50 most relevant studies.
Reviews & meta-analyses: 15 · Randomised trials: 17 · 2013–2026
Showing the 50 most relevant studies, sorted by most relevant.
O. Sitbon, J. Bosch, E. Cottreel, et al.
The Lancet. Respiratory medicine, 2019
Jinlv Qin, Guizuo Wang, Dong Han
Global Heart, 2023
Background: This systematic review and meta-analysis aimed to determine the efficacy of macitentan in patients with pulmonary hypertension (PH). Methods: A systematic search was made of PubMed, Embase, Cochrane Library, and clinicaltrials.gov, without language restrictions. Randomized controlled trials (RCTs) on treatment of PH with macitentan, compared with placebo or blank, were reviewed. Studies were pooled to weighted mean differences (WMDs) and risk ratios (RRs), with 95% confidence intervals (CIs). Results: Six RCTs (enrolling 1,003 participants) met the inclusion criteria. Macitentan showed significant effects on 6-min walk distance (6MWD) (WMD 12.06 m, 95% CI 2.12 to 21.99 m), pulmonary vascular resistance (PVR) (WMD –186.51 dyn·s/cm–5, 95% CI –232.72 to –140.29 dyn·s/cm–5), mean pulmonary artery pressure (mPAP) (WMD –3.20 mmHg, 95% CI –5.93 to –0.47 mmHg), N-terminal pro-brain natriuretic peptide (NT-proBNP) (WMD –232.47 ng/L, 95% wCI –318.22 to –146.72 ng/L), and cardiac index (WMD 0.39 L/min/m2, 95% CI 0.20 to 0.58 L/min/m2). Conclusion: Macitentan significantly improved 6MWD, PVR, mPAP, NT-proBNP, and cardiac index in patients with PH. Macitentan should be further validated in patients with PH.
Abstract licence: CC BY 4.0
Cao Z, Meng L, Li Y, et al.
2025
Abstract Introduction Endothelin receptor antagonists (ERAs), including ambrisentan, bosentan, and macitentan, are central to the treatment of pulmonary arterial hypertension (PAH). As patient survival improves, long-term management increasingly requires systematic evaluation of these agents to balance their efficacy, safety, cost, and accessibility. However, standardized frameworks that integrate the multiple dimensions of clinical value remain limited. Aim This study aimed to establish and apply a six-dimensional Multi-Criteria Decision Analysis (MCDA) framework to comprehensively assess the clinical value of ambrisentan, bosentan, and macitentan in the treatment of PAH. Method A structured evaluation system was developed using Delphi expert consultation and evidence synthesis from systematic reviews, meta-analyses of randomized controlled trials (RCTs), pharmacoeconomic assessments, and regulatory documents. Six core dimensions were included: safety, efficacy, economic value, suitability, accessibility, and innovation. Quantitative and qualitative indicators were normalized and weighted using the Analytic Hierarchy Process and integrated using the MCDA model. Sensitivity analyses were performed to verify the robustness of rankings. Results The final framework comprised six primary dimensions, 13 secondary indicators, and 32 tertiary indicators. Twelve RCTs met the inclusion criteria for quantitative analysis. All three ERAs improved exercise capacity and hemodynamic parameters, whereas ambrisentan exhibited superior tolerability. Economic evaluation showed that ambrisentan and bosentan offered better cost-effectiveness, with incremental cost-effectiveness ratios of 140.12 per meter and 142.38 per meter, respectively, compared with 1,470.71 per meter for macitentan. Suitability analysis favored ambrisentan and macitentan because of their once-daily dosing and favorable adherence profiles. Bosentan demonstrated advantages in affordability owing to its lower cost and National Reimbursement Drug List coverage. Innovation assessment ranked macitentans as the highest for technological advancement. Integrated MCDA scoring indicated that ambrisentan achieved the greatest overall clinical value. Conclusion This study developed a multidimensional, evidence-based evaluation model for PAH therapy using MCDA. Ambrisentan achieved the highest comprehensive score across the six key dimensions, reflecting its balanced efficacy, safety, and economic performance. The proposed framework provides a practical tool for clinicians, pharmacists, and policymakers to support rational drug use, formulary management, and value-based decision making in PAH and other rare diseases.
Abstract licence: CC BY
Ekkehard Grünig, P. Jansa, F. Fan, et al.
Journal of the American College of Cardiology, 2024
Jing Wang, Xu Liu, Lihui Ge, et al.
2023
Suresh SB, Noor K, Hyun J, et al.
2025
Abstract Background Inoperable or residual chronic thromboembolic pulmonary hypertension treatment modalities remain challenging due to limited comparison of alternatives between BPA and pharmacological agents. Objective To compare the relative efficacy and safety of BPA and pharmacological treatments in patients with inoperable or residual CTEPH. By integrating both direct and indirect comparisons, the study aims to provide a hierarchised, evidence-based framework to inform personalised treatment selection and guideline development for this high-risk population. Methods A systematic search of major databases through November 2024 identified randomized trials evaluating BPA, Riociguat, endothelin receptor antagonists (Bosentan, Ambrisentan, Macitentan), PDE-5 inhibitors (Sildenafil), and prostacyclin analogs (Selexipag). Outcomes included pulmonary vascular resistance (PVR), mean pulmonary artery pressure (mPAP), cardiac index (CI), 6-minute walk distance (6MWD), NT-proBNP, and Borg Dyspnea Index (BDI). A frequentist random-effects model was applied using the netmeta R package. Results Nine studies with 839 participants were analyzed. BPA showed the greatest reduction in PVR (MD -444.02 dyn·s·cm⁻⁵, 95% CI -606.99 to -281.05) and mPAP (MD -16.17 mmHg), with the highest SUCRA scores across outcomes. Riociguat ranked second overall, improving PVR, 6MWD, and CI. Macitentan and selexipag significantly improved CI, while bosentan reduced NT-proBNP. Ambrisentan and sildenafil did not demonstrate significant benefits over placebo. High heterogeneity was observed for PVR and BDI outcomes. Conclusions Ballon Pulmonary Angioplasty (BPA) demonstrates the most robust and consistent improvements in hemodynamics as evidenced by PVR, mPAP and mRAP measurements as well in functional and biomarker improvements (6MWD and NT-proBNP) in patients with inoperable CTEPH while Riociguat remains the most effective pharmacologic agent, offering significant benefits across multiple domains including PVR, 6MWD, mPAP and CI. Macitentan and Selexipag showed promising improvements in cardiac output while Bosentan provided NT-proBNP and pVR benefit. Ambrisentan and Sildenafil did not demonstrate significant advantages over placebo in this population. These findings support BPA as the most effective intervention for inoperable CTEPH, with Riociguat as the preferred pharmacologic therapy. However, limited direct comparisons and heterogeneity in some endpoints warrant long-term outcome studies to refine treatment sequencing, combination strategies and the consideration for future head-to-head trials between advanced oral therapies and BPA.
Abstract licence: CC BY
J. Vachiéry, M. Delcroix, H. Al-hiti, et al.
European Respiratory Journal, 2018
Clift P, Berger F, Sondergaard L, et al.
2025
- Heart Defects, Congenital
- Sulfonamides
- Pyrimidines
Sanjiv J. Shah, D. Bonderman, B. Borlaug, et al.
Circulation. Heart Failure, 2025
- Sulfonamides
- Pyrimidines
- Stroke Volume
O M Moisseeva, A V Rudakova
Terapevticheskii arkhiv, 2017
Aim. To provide a pharmacoeconomic estimate of macitentan versus bosentan in therapy for pulmonary arterial hypertension (PAH). Subject and methods. An analysis was carried out on the basis of a social perspective for patients, whose mean age was 50 years. A budget impact analysis was performed without discounting; with the time horizon of the study being 5 years. Assessing the cost- effectiveness of endothelin receptor antagonists used a Markov model based on the meta-analysis of clinical trials. The cost of bosentan was calculated from the 2016 registered prices with VAT. That of macitentan was estimated from the expected price of 170,000 rubles per 10-mg dose pack №28 if the drug is included in the List of Essential Medicines with VAT. The cost of sildenafil and iloprost was consistent with the January-to-November 2016 auction results. At cost-effectiveness assessment costs and outcomes were both discounted at an annual rate of 3,5%. Results. After 5 years of therapy with macitentan in patients with baseline Functional Class (FC) II PAH, the proportion of patients with FC I-II was shown to be 2.6% more than that during therapy with bosentan (20.1 and 17.5%, respectively), and that of the died patients was 1.5% lower (69.5 and 71%, respectively). In baseline FC III PAH following 5 years, the proportion of patients with FC III PAH on initial macitentan treatment was 1% more than that on bosentan therapy (8.1 and 7.1%, respectively), and that of the died patients was 0.5% lower (87.2, and 87.7%, respectively). The cost-effectiveness analysis shows that therapy with macitentan versus bosentan not only causes some increase in life expectancy in terms of quality of life (by 0.414 and 0.230 QALYs in FC II and III PAH, respectively), but also results in a small cost decrease in FC II and III PAH (by 11,000 and 16,000 rubles per patient, respectively). Thus, macitentan is a dominant alternative versus bosentan. The budget impact analysis indicates that when bosentan is replaced with macitentan, the reduction in health care costs in the Russian Federation will amount to 1.9 million rubles over 5 years, and in all budgetary costs will be 14.7 million rubles. Conclusion. Treatment with macitentan in patients with FC II-III PAH is more cost-effective than that with bosentan and does not require an increase in budget costs.
Abstract licence: CC BY-NC-SA 4.0
Sources: aggregated from Europe PMC (EMBL-EBI), OpenAlex, Crossref, PubMed and other open scholarly databases. Retracted articles are excluded. Study information is provided for research purposes and does not constitute medical advice.
Pharmacology and chemical data from DrugBank
Key facts
Drug status
Approved
Major interactions
7 found
Half-life
16 hours
Mechanism
Macitentan is an antagonist which binds to the endothelin A and B receptors (EA…
Food interactions
1 warning
Human targets
2 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
8h
Half-life
16 hours
[L39105][A174082]
The half-life of elimination of the active metabolite is 40-66h.
Protein binding
99%
[L39105][A174082]
Volume of distribution
40-50L
[L39105][A174082]
Metabolism
[A174082]
…
Elimination
50%
[L39105][A174082]
Of the 50% excreted through the urine, none of the recovered dose was in the form of the parent drug nor the active metabolite.…
Clearance
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
A combination product (Opsynvi) comprising macitentan and [tadalafil] was approved in Canada in October 2021 for the treatment of PAH.[L39105] It was subsequently approved by the FDA in March 2024.[L50622]
[L35890][L39105][L50622]
Known interactions with other medicines. Always consult a healthcare professional.
Showing 50 of 1214 interactions
[L39105]
In case of overdose standard supportive measures are recommended. Hemodialysis is not expected to contribute significantly to macitentan clearance due to its high degree of plasma protein binding.
How the body processes this drug — absorption, distribution, metabolism, and elimination
[L39105][A174082]
Although the bioavailability has not been experimentally determined, pharmacokinetic modeling has estimated it at 74%.
[A174082]
Food has not been found to have a significant effect on absorption.
[L39105][A174082]
The half-life of elimination of the active metabolite is 40-66h.
[L39105][A174082]
[L39105][A174082]
[A174082]
The ethylene glycol moiety undergoes oxidative cleavage via CYP2C9 to the alcohol metabolite M4. M4 is oxidized to its corresponding acid, M5, then hydrolyzed to the metabolite termed m/z 324. Oxidative depropylation of a distal carbon atom via CYP2C8, 2C9, and 2C19 forms M7.
Hydrolysis of both macitentan and M5 produces M3. Finally M5 may be further metabolized via hydrolysis and hydroxylation to M2 or via glucuronidation to a glucuronide metabolite, M1.
[L39105][A174082]
Of the 50% excreted through the urine, none of the recovered dose was in the form of the parent drug nor the active metabolite.
Proteins and enzymes this drug interacts with in the body
Enzymes involved in drug metabolism — important for understanding drug interactions
Proteins that carry this drug through the body
PMID:19021548
Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity).
Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity).
Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli .
PMID:6234017
Does not prevent iron uptake by the bacterial siderophore aerobactin PMID:6234017
Appears to function in modulating the activity of the immune system during the acute-phase reaction
ATC C02KX04
ATC C02KX54
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Show
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Linked compound data from DrugBank Open Data (CC BY-NC 4.0)
Macitentan
Additional database identifiers
Drugs Product Database (DPD)
22162
ChemSpider
13134960
BindingDB
50395626
PDB
A1D5I
ZINC
ZINC000043202140
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3179
GenAtlas
EDNRA
GeneCards
EDNRA
GenBank Gene Database
S63938
GenBank Protein Database
238636
Guide to Pharmacology
219
UniProt Accession
EDNRA_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3180
GenAtlas
EDNRB
GeneCards
EDNRB
GenBank Gene Database
M74921
GenBank Protein Database
182276
Guide to Pharmacology
220
UniProt Accession
EDNRB_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2637
GenAtlas
CYP3A4
GeneCards
CYP3A4
GenBank Gene Database
M18907
Guide to Pharmacology
1337
UniProt Accession
CP3A4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2621
GeneCards
CYP2C19
GenBank Gene Database
M61854
GenBank Protein Database
181344
Guide to Pharmacology
1328
UniProt Accession
CP2CJ_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2623
GenAtlas
CYP2C9
GeneCards
CYP2C9
GenBank Gene Database
AY341248
Guide to Pharmacology
1326
UniProt Accession
CP2C9_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2622
GenAtlas
CYP2C8
GeneCards
CYP2C8
GenBank Gene Database
M17397
Guide to Pharmacology
1325
UniProt Accession
CP2C8_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:399
GenAtlas
ALB
GeneCards
ALB
GenBank Gene Database
V00494
GenBank Protein Database
28590
UniProt Accession
ALBU_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:8498
GenAtlas
ORM1
GeneCards
ORM1
GenBank Gene Database
X02544
GenBank Protein Database
757907
UniProt Accession
A1AG1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:8499
GeneCards
ORM2
GenBank Gene Database
BC015964
GenBank Protein Database
16359000
UniProt Accession
A1AG2_HUMAN
DrugBank citations
If you use DrugBank data in your research, please cite:
- DrugBank 6.02024Recommended citationKnox C., Wilson M., Klinger C.M., et alDrugBank 6.0: the DrugBank Knowledgebase for 2024Nucleic Acids Res. 2024 Jan 552(D1):D1265-D1275
- DrugBank 5.02018Wishart D.S., Feunang Y.D., Guo A.C., et alDrugBank 5.0: a major update to the DrugBank database for 2018Nucleic Acids Res. 2017 Nov 846(D1):D1074-D1082
- DrugBank 4.02014Law V., Knox C., Djoumbou Y., et alDrugBank 4.0: shedding new light on drug metabolismNucleic Acids Res. 2014 Jan 142(1):D1091-7
- DrugBank 3.02011Knox C., Law V., Jewison T., et alDrugBank 3.0: a comprehensive resource for 'omics' research on drugsNucleic Acids Res. 2011 Jan39(Database issue):D1035-41
- DrugBank 2.02008Wishart D.S., Knox C., Guo A.C., et alDrugBank: a knowledgebase for drugs, drug actions and drug targets.Nucleic Acids Research2008 Jan36(Database issue):D901-6
- DrugBank 1.02006Wishart D.S., Knox C., Guo A.C., et alDrugBank: a comprehensive resource for in silico drug discovery and exploration.Nucleic Acids Research2006 Jan 134(Database issue):D668-72