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Could a single pill replace the shot for gonorrhea?

NCT ID NCT03959527

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase 3 trial tested a new antibiotic called zoliflodacin, taken as a single oral dose, against the standard treatment of an injection plus pills for uncomplicated gonorrhea. Over 1,000 participants were enrolled to see if the new pill works as well and is safe. If successful, it could offer a simpler, more convenient treatment option.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
zoliflodacin
What this could lead to
If successful, this could provide a simple, single-dose oral treatment for gonorrhea, reducing the need for injections and helping fight antibiotic resistance.
What could go wrong
The trial is completed but results are not yet widely available. The new drug may not be as effective as current treatments, and antibiotic resistance remains a concern.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

1,011 people

The number who actually took part.

Started

Nov 2019

Finished

Sep 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

12 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age ≥ 12 years old (if enrolment of minors is in agreement with local regulations and Ethics guidance) 2. Weight ≥ 35 kg 3. Signs and symptoms consistent with urethral or cervical gonorrhoea OR Urethral or cervical uncomplicated gonorrhoea as determined by either a positive culture or NAAT or Gram stain or methylene blue test/gentian violet stain in the past 14 days prior to screening OR Unprotected sexual contact with an individual reported to be infected with NG in the past 14 days prior to screening (confirmation by a positive NAAT, Gram stain or methylene blue test/ gentian violet stain or culture) 4. For females of child-bearing potential, a negative urine pregnancy test at screening 5. For females of child bearing potential, use of highly effective contraception for at least 28 days prior to screening and during at least 28 days after treatment. Females on oral contraceptives must also use a barrier contraception method during participation in the study. 6. For males with a female partner of child-bearing age, willingness to delay conception for 28 days after treatment 7. Willingness to comply with trial protocol 8. Willingness to undergo HIV testing 9. Willingness to abstain from sexual intercourse or use condoms for vaginal, anal and oral sex until end of trial visit 10. Willingness and ability to give written informed consent or be consented by a legal representative or provide assent and parental consent (for minors, as appropriate). Exclusion Criteria: 11. Confirmed or suspected complicated or disseminated gonorrhoea 12. Pregnant or breastfeeding women 13. Known concomitant infection which would require immediate additional systemic antibiotics with activity against NG (e.g. CT infection) 14. Use of any systemic or intravaginal antibiotics with activity against NG within 30 days prior to screening 15. Use of systemic corticoid drugs or other immunosuppressive therapy within 30 days prior to screening 16. Use of moderate or strong CYP3A4 inducers (e.g. efavirenz, rifampicin, carbamazepine, phenobarbital) within 30 days or five half-lives of the drug, whichever is greater, prior to screening 17. Cytotoxic or radiation therapy within 30 days prior to screening 18. Known chronic renal, hepatic, hematologic impairment or other condition interfering with the absorption, distribution or elimination of the drug based on medical history and physical examination 19. History of urogenital sex-reassignment surgery 20. Immunosuppression as evidenced by medical history, clinical examination or a recent (≤ 1 month) CD4 count \<200 cells/μL 21. Know clinically relevant cardiac pro-arrhythmic conditions such as cardiac arrhythmia, congenital or documented QT prolongation 22. Known history of severe allergy to cephalosporin, penicillin, monobactams, carbapenems or macrolide antibiotics 23. Known or suspected allergies or hypersensitivities to lidocaine, methylparaben, lactose or any of the components of the study drugs (refer to the zoliflodacin IB and SmPC for the comparators treatments) 24. Receipt or planned receipt of an investigational product in a clinical trial within 30 days or five half-lives of the drug, whichever is greater, prior to screening until end of participation to this clinical trial 25. History of alcohol or drug abuse within 12 months prior to screening which would compromise trial participation in the judgment of the investigator 26. Severe medical or psychiatric condition which, in the opinion of the investigator, may increase the risk associated with trial participation or may interfere with the interpretation of trial results or affect the individual's ability to provide informed consent 27. Individuals whom, in the judgement of the investigator, are unlikely or unable to comply with this trial protocol 28. Previous randomisation in this clinical trial. 29. Use of moderate or strong CYP3A4 inhibitors within 30 days or five half-lives of the drug, whichever is greater, prior to screening

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Bangrak STI Center

    Bangkok, 10120, Thailand

  • Bell Flower Clinic

    Indianapolis, Indiana, 46202, United States

  • Institute of HIV Research and Innovation

    Bangkok, 10330, Thailand

  • Institute of Tropical Medicine

    Antwerp, 2000, Belgium

  • Jefferson County Department of Health

    Birmingham, Alabama, 35233, United States

  • Louisiana State University Health Sciences Center

    New Orleans, Louisiana, 70112, United States

  • Masiphumelele Research Site

    Cape Town, 7975, South Africa

  • Ndlovu Research Centre

    Elandsdoorn, 0470, South Africa

  • Public Health - Seattle & King County STD Clinic

    Seattle, Washington, 98104, United States

  • Public Health Service (GGD) Amsterdam / STI Outpatient Clinic

    Amsterdam, 1018 WT, Netherlands

  • SAMRC Botha's Hill Clinical Research Site

    Bothas Hill, 3660, South Africa

  • SAMRC Tongaat Clinical Research Site

    Tongaat, 4400, South Africa

  • San Francisco Department Of Public Health City Clinic

    San Francisco, California, 94103, United States

  • Setshaba Research Centre

    Soshanguve, 0152, South Africa

  • Silom Community Clinic

    Bangkok, 10400, Thailand

  • University of Alabama at Birmingham

    Birmingham, Alabama, 35294-0006, United States

  • Wits RHI

    Johannesburg, 2001, South Africa

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