Clarithromycin clinical trials
Clarithromycin is named as an intervention in 13 current clinical trials in our China, Egypt, France, Taiwan, USA, Canada, Netherlands, Denmark, Singapore, Australia and Israel registers. 9 are recruiting patients now. The most common phase is Phase 3. The sponsor with the most trials is Tanta University (3). The most-studied condition is Helicobacter Pylori Infection.
Where Clarithromycin is approved
All regulators →Of the three regulators tracked here, the first to approve Clarithromycin was the US, on 31 Oct 1991.
- 1 EU orphan designation, most recently for treatment of nontuberculous mycobacterial lung disease (10 Aug 2022, positive)
From the regulators' own registers: FDA Drugs@FDA, the EMA medicines list and Health Canada's Notice of Compliance database. Dates are the first listed approval of a product containing only this substance; combination products and nationally authorised EU medicines are not counted.
What health systems spend on Clarithromycin
All medicines →From NHSBSA Prescription Cost Analysis (Open Government Licence v3.0) and CMS State Drug Utilization Data. Both are gross amounts: neither system publishes its discounts or rebates per drug. Products combining several substances are not counted here.
How Clarithromycin works
All drug targets →- Bacterial 70S ribosome inhibitor InhibitorChEMBL only
- Acute otitis mediaPhase 3
- Crohn diseasePhase 3
- Helicobacter pylori infectious diseasePhase 3
- Intraventricular hemorrhagePhase 3
- Mycobacterium avium complex diseasePhase 3
- Parkinson diseasePhase 3
- SepsisPhase 3
- AsthmaPhase 3
- Bronchopulmonary dysplasiaPhase 3
- ChorioamnionitisPhase 3
Mechanisms and diseases from ChEMBL via the Open Targets Platform (release 26.09), ChEMBL record CHEMBL1741, CC BY-SA 3.0. Targets checked against the IUPHAR/BPS Guide to PHARMACOLOGY (2026.3.1), ligand 10903, CC BY-SA 4.0. Trial phases are not approvals: approved uses are shown from the regulators' own records where we hold them.
Patient leaflets for Clarithromycin
The package leaflet is the official guide for patients that comes with every medicine. These links go to the regulators that publish it.
- IEIreland: 21 products on the HPRA listEach product record links to the HPRA, which publishes the leaflet and SmPC.
- UKUnited Kingdom: Search MHRA ProductsPatient information leaflets and SmPCs for UK-licensed products.
- USUnited States: Search DailyMedFDA-approved labels, including patient and medication guides.
Leaflets differ between brands and countries; always read the one that comes with your own medicine. This is regulatory information, not medical advice.
Reference identifiers for Clarithromycin
- ATC code
- J01FA09
- ChEMBL
- CHEMBL1741
- DrugBank
- DB01211
- PubChem CID
- 84029
- CAS number
- 81103-11-9
- FDA UNII
- H1250JIK0A
- Wikidata
- Q118551
- Wikipedia
- Clarithromycin
Codes that identify this medicine in other databases, from Wikidata (CC0), matched by its ChEMBL ID. The ATC code is the WHO classification of what the medicine is used for.
Trials by status
Trials by phase
Clinical trials of Clarithromycin
13 trialsRegisters list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
Clarithromycin across our data
Ireland · EU · USThe same active substance in our other registers, matched by its exact name. Each entry links to the register record it comes from.
Licensed in Ireland (HPRA)
21 single-substance products containing Clarithromycin on the HPRA medicines list.
- Clarithromycin 250 mg film-coated tabletsAccord Healthcare Ireland Ltd. · PA2315/197/001 · Marketed
- Clarithromycin 250 mg film-coated tabletsSun Pharmaceutical Industries Europe B.V. · PA2050/002/001 · Marketed
- Clarithromycin 500 mg film-coated tabletsAccord Healthcare Ireland Ltd. · PA2315/197/002 · Marketed
- Clarithromycin 500 mg film-coated tabletsSun Pharmaceutical Industries Europe B.V. · PA2050/002/002 · Marketed
- Clarithromycin Teva 250 mg film-coated tabletsTeva Pharma B.V. · PA0749/148/001 · Marketed
Supply shortages
No entry for Clarithromycin in the EMA, FDA or German BfArM shortage lists we track.
Conditions studied with Clarithromycin
15 conditionsAll 15 conditions
| Condition (as registered) | Trials |
|---|---|
| Helicobacter Pylori Infection | 2 |
| HELICOBACTER PYLORI INFECTIONS | 2 |
| Multiple Myeloma | 1 |
| Ovarian Epithelial Cancer | 1 |
| Gastritis, Indigestion, Helicobacter Pylori Infection, Gastric Cancer, Peptic Ulcer | 1 |
| Non-cystic Fibrosis Bronchiectasis、Chronic Sinusitis Without Nasal Polyps、Chronic Obstructive Pulmonary Disease | 1 |
| Chemotherapy Effect | 1 |
| Helicobacter Pylori Infection Chronic Gastrit | 1 |
| Lung Infection | 1 |
| MAC Lung Disease | 1 |
| Previable Labour With Intact Membranes | 1 |
| Pulmonary Disease Due to Mycobacteria (Diagnosis) | 1 |
| Helicobacter Infection | 1 |
| Helicobacter Pylori Gastrointestinal Tract Infection | 1 |
| Helicobacter Pylori Infected Patients | 1 |
Sponsors
lead sponsor per trialBy country register
A trial with sites in more than one country appears in each of those registers.
Related compounds
Questions about Clarithromycin trials
How many clinical trials are testing Clarithromycin?
13 current trials in our China, Egypt, France, Taiwan, USA, Canada, Netherlands, Denmark, Singapore, Australia and Israel registers name Clarithromycin as a drug or biological intervention, as of the registry sync on 9 November 2026. Completed and withdrawn studies are not counted.
Are Clarithromycin trials recruiting patients?
Yes. 9 of the 13 trials are recruiting: 2 with sites in China, 3 with sites in Egypt, 1 with sites in France, 2 with sites in Taiwan, 1 with sites in USA, 1 with sites in Canada, 1 with sites in Netherlands, 1 with sites in Denmark, 1 with sites in Singapore, 1 with sites in Australia and 1 with sites in Israel. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
Who sponsors Clarithromycin clinical trials?
Tanta University (3), Karyopharm Therapeutics Inc (1), Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd (1) and Yongquan Shi (1), among 11 lead sponsors in total. The number in brackets is how many trials each organisation leads.
Is Clarithromycin licensed in Ireland?
Yes. The HPRA medicines list includes 21 single-substance products containing Clarithromycin, for example Clarithromycin 250 mg film-coated tablets (Accord Healthcare Ireland Ltd.). A licence does not mean a product is currently marketed or reimbursed; see each product's record.
Is there a Clarithromycin shortage?
Not in the lists we track: Clarithromycin has no entry in the EMA, FDA or German BfArM shortage registers as of their latest sync.
Where does this information come from?
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how Clarithromycin works or whether it is effective, and it is not medical advice.
How this page is built
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how Clarithromycin works or whether it is effective. Each trial links to its own record so you can check it yourself.
- ClinicalTrials.gov (U.S. National Library of Medicine) ↗ Trial IDs, titles, intervention names and synonyms, phase, overall status, lead sponsor and conditions for every trial on this page
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists Clarithromycin (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 9 Nov 2026. How every register is built: methodology · fixes we have made: corrections log.