cyclic polypeptide antibiotic

Colistin

US: FDA-approvedEU: Not on the registerUK: AuthorisedCA: AuthorisedAU: Status unknownCH: AuthorisedBR: RegistadoRS: AuthorisedSG: Not on the registerTR: Ruhsatli

Answer

Colistin is authorised or registered in the US, the UK, Canada, Switzerland, Brazil, Serbia and Turkey: 7 of the 10 registers read. Highest trial phase: Phase 4 (after approval). It has 130 registered trials, 23 of them running. Brand names on the FDA label register: Cortisporin Tc.

RegulatorTrial register10 regulators' registers, read 2026-08-31 to 2026-10-03 · ClinicalTrials.gov and EU CTIS, read 2026-10-03

Not medical, legal or regulatory advice.

Registered trials130Trial register ClinicalTrials.gov and EU CTIS
Running now23Trial register recruiting, active or enrolling
Results posted5Trial register with results on the register
Stopped early9.2%Trial register all peptides: 10%

130 trials by status

Trial register
Running 23Completed 58Stopped early 12Status unknown 29Other or not stated 8

ClinicalTrials.gov and EU CTIS · read 2026-10-03 · 5 trials have posted results

Trials first submitted per year

Trial register

ClinicalTrials.gov first-submitted date, last 10 years · read 2026-10-03. 2026 is not complete. 65 trials carry no first-submitted date (EU CTIS publishes none, or the year is outside this range).

Status by jurisdiction

World map
Authorised or registeredNot on the register, or withdrawnNot read yet, or status unknown
WhereStatusRegisterRead
United StatesFDA-approvedFDA, openfda2026-10-03
European UnionNot on the registerEMA, ema2026-08-31
United KingdomAuthorisedMHRA, uk-mhra2026-10-03
CanadaAuthorisedHealth Canada, ca-dpd2026-10-03
AustraliaStatus unknownTGA, au-artgnot read
SwitzerlandAuthorisedSwissmedic, ch-swissmedic2026-09-03
BrazilRegistadoANVISA, br-anvisa2026-10-03
SerbiaAuthorisedALIMS, rs-alims2026-09-03
SingaporeNot on the registerHSA, sg-hsa2026-09-03
TurkeyRuhsatliTITCK, tr-titck2026-09-03

An EU decision applies in the 30 territories the EU register covers: its member states, and Iceland, Liechtenstein and Norway. A dashed tile has no register read for this peptide.

Side effects

Trial register
1 placebo-controlled trial · 228 people on Colistin · grey is placebo
Acute kidney injury30.3% 33.9%
Creatinine increased20.2% 23.5%
Sepsis9.6% 10.4%
Aspartate aminotransferase increase4.4% 5.7%
Hypokalemia4.4% 4.8%
ClinicalTrials.gov posted results · read 2026-10-03All side effects

CHANGE ALERTS

Get an email when this changes

One email when the status of Colistin changes on the register. You confirm your address first.

REGISTERED TRIALS

Newest 10 of 130 trials

All 130 trials
2022-501575-12-00
C3601008 - A PHASE 2A MULTICENTER, OBSERVER-BLINDED, RANDOMIZED 2 ARM STUDY TO INVESTIGATE PHARMACOKINETICS, SAFETY, TOLERABILITY
no status recorded · register updated 2026-09-16
NCT06819462
Inhaled Colistin to Prevent Ventilator-Associated Pneumonia in Patients With Acute Brain Injury
currently recruiting participants · register updated 2026-09-15
2025-524657-14-00
Comparative bioavailability study of Colistin Cyclops® administered as 3 different doses
no status recorded · register updated 2026-09-14
NCT07082465
Epidemiology of Antimicrobial-use and Antimicrobial-resistant Infections in Four Hospitals in Thailand
running, but no longer enrolling · register updated 2026-08-14
2024-519748-34-00
A Randomized controlled open-label phase II trial assessing the efficacy and safety of two-dosing regimens of frozen encapsulated
no status recorded · register updated 2026-07-22
NCT07512596
Study on the Safety and Efficacy of Polymyxin E2 Methanesulfonate for Injection in the Treatment of Hospital-Acquired Bacterial Pn
not yet recruiting participants · register updated 2026-07-17
NCT07694700
Colistin and Meropenem Versus Amikacin and Meropenem for MDR Gram Negative Bacteria Regarding Efficacy and Safety.
running, but no longer enrolling · register updated 2026-07-14
NCT06087536
A Clinical Trial to Assess the Safety and PK of OMN6 in HABP or VABP Caused by Acinetobacter Baumannii Complex
currently recruiting participants · register updated 2026-07-02
NCT07671755
Colistin Versus Colistin Combined With Cefoperazone-sulbactam for Multiresistant Acinetobactor Baumannii Ventilator-associated Pne
completed · register updated 2026-06-26
NCT07668141
Colistin Nephrotoxicity and Role of Alpha Lipoic Acid
not yet recruiting participants · register updated 2026-06-25

All peptides · Method

WEEKLY

Register Watch, weekly

New trials, approvals and enforcement actions. One email a week.