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HealthyPhase 1HELP-OXANCT06606860

Safety, Tolerability and PK of Single and Multiple Doses of Oxantel Pamoate Tablets

A Phase 1 study testing Oxantel Pamoate in people with Healthy, run by Swiss Tropical & Public Health Institute at 1 site in Tanzania.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The goal of this clinical trial is to evaluate the safety, tolerability and pharmacokinetics of oxantel pamoate tablet after administration of a single and multiple dose in healthy male and female adult volunteers. Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
Oxantel Pamoate
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
45 participants
Where
1 siteTanzania
Study dates
27 Jan 2025to 8 Apr 2025
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy adult male or non-pregnant (confirmed by a negative serum pregnancy test) and non-breastfeeding female participants, aged between 18 to 45 years at the time of consent.
  • Written informed consent (IC) obtained before any study procedure.
  • Ability to read and write and to understand the participant information sheet and the nature of the trial and any hazards from participating in it (following a test with a maximum of two attempts). Ability to communicate satisfactorily with the Investigator and to participate in, and comply with the requirements of, the entire trial.
  • Women of childbearing potential (WOCBP) must agree to use a highly effective form of contraception from at least 28 days prior to first dosage to 30 days after discharge from the ward.
  • Normal body weight range (BMI between 18 and 29.9 kg/ m2).

Who cannot join

  • Participation in another clinical trial within 3 months prior to the study, or within 5-times the half-life of the drug tested in the previous clinical trial, whichever is longer (time calculated relative to the last dose in the previous clinical trial).
  • Regular daily consumption of more than one liter of xanthine-containing beverages (e.g. tea, coffee, cola or chocolate drinks).
  • Regular daily consumption of more than 5 cigarettes daily.
  • Use of a prescription medicine during the 28 days before the first dose of trial medication or use of an over-the-counter medicine, during the 7 days before the first dose of trial medication.
  • Use of dietary supplements or herbal remedies (such as St John\'s Wort) known to interfere with the CYP3A4 and/or P-gp metabolic pathway during the 28 days before the first dose of trial medication.
  • Therapies which may impact on the interpretation of study results in the opinion of the Investigator.
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  • Medical, social condition, psychiatric disorder or occupational reasons that, in the judgment of the Investigator, is a contraindication to the protocol, may impair the volunteer's ability to give informed consent or effectively participate in the study, may significantly increase the risk to the volunteer because of participation in the study or may impair interpretation of the study data.
  • Blood pressure (BP) and heart rate (HR) in supine position at the screening examination outside the ranges (systolic BP range: 105-136 mm Hg systolic, diastolic BP range: 58-84 mm Hg diastolic; HR range: 56- 96 beats/min).
  • Febrile illness within 1 week before the start of study treatment.
  • History of relevant diseases of vital organs, of the central nervous system or other organs.
  • Known renal or hepatic impairment
  • Participants with a history of allergies, non-allergic drug reactions, adverse reaction to any drug, or multiple drug allergies.
  • Presence or history of drug or alcohol abuse in the last 10 years.
  • Surgery (e.g. stomach bypass) or medical condition that might affect absorption of study drug taken orally.
  • Clinically relevant abnormal medical history, concurrent medical condition, acute or chronic illness or history of chronic illness sufficient to invalidate the volunteer\'s participation in the trial or make it unnecessarily hazardous.
  • Relevant pathological abnormalities in the electrocardiogram (ECG) such as a second or third-degree AV block, prolongation of the QRS complex over 120 msec or of the QTcF-interval over 450 msec (corrected interval according to Fridericia's formula).
  • Positive test for human immunodeficiency virus (HIV), hepatitis B or C.
  • Positive stool or urine test for helminth infestation by Kato-Katz, urine filtration or Baermann test.
  • Positive for malaria by thick blood smear (TBS).
  • Presence of abnormal physical findings, or laboratory values at the screening assessment that could interfere with the objectives of the trial or the safety of the volunteer.

Trial locations and contacts

1 site in 1 country.

Tanzania1 site
  • Ifakara Health Institute

    Bagamoyo

Other trials in Tanzania

About this study

Official title: A Placebo Controlled, Double-Blind, 3-Arm Phase I Study to Investigate the Safety, Tolerability and Pharmacokinetics of Single and Multiple Doses of 20 mg/kg Oxantel Pamoate in Healthy Adult Volunteers

The goal of this clinical trial is to evaluate the safety, tolerability and pharmacokinetics of oxantel pamoate tablet after administration of a single and multiple dose in healthy male and female adult volunteers.

The main questions aim to answer if oxantel pamoate is safe and well tolerated in healthy volunteers and if is it absorbed by the human body.

A single dose and a multiple dose of oxantel pamoate will be compared to placebo to see if there are any different effects.

Read the detailed description

Objectives:

Primary objective:

To investigate the safety and tolerability of oxantel pamoate after single and multiple oral administration of a chewable tablet formulation.

Secondary objective:

To investigate the pharmacokinetics (PK) of oxantel pamoate after single and multiple oral administration of a chewable tablet formulation.

Study Design:

This is a randomized, placebo controlled, double blind, 3-arm Phase I single centre study in a total of 45 healthy adults. The participants will be randomized into one of the following three study arms:

  • Study arm 1, 20 participants: Treatment with single dose of 20 mg/kg oxantel pamoate on day 1 followed by administration of two daily doses placebo
  • Study arm 2, 20 participants: Treatment with three daily dose of 20 mg/kg oxantel pamoate
  • Study arm 3, 5 participants: Treatment with three daily dose of placebo PK sampling will be performed at 13 defined time points (baseline included).

The participants will be admitted to the ward one day prior to commencement of the study treatment (day -1) and will stay until one day after the last dose has been administered. They will have a final follow-up visit on day 14. The safety and tolerability will be assessed as of the first dosage up to the last follow-up visit. Biochemistry, haematology, coagulation and urinalysis will be checked at baseline, day 3 and at the final follow-up visit.

Conditions
Healthy
Being tested
Oxantel Pamoate, Placebo
Keywords
Soil transmitted helminths, Phase I, Safety, Tolerability, Pharmacokinetics, Trichuriasis, Whipworm, Parasitic Diseases, Neglected Diseases
Medical subject headings
Trichuriasis, Parasitic Diseases, Neglected Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Oxantel PamoateDrug

    Oxantel Pamoate tablet, 250mg

  • PlaceboDrug

    Placebo tablet

Study groups in NCT06606860
Study groupRoleWhat they receive
Arm 1ExperimentalTreatment with a single dose of 20 mg/kg oxantel pamoate followed by administration of two daily doses placebo
Receives: Drug: Oxantel Pamoate
Arm 2ExperimentalTreatment with three daily dose of 20 mg/kg oxantel pamoate
Receives: Drug: Oxantel Pamoate
Arm 3Placebo comparatorTreatment with three daily doses of placebo
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. General safety (number, frequency, severity, seriousness and duration of adverse events)

    Summarized statistics on adverse events will be reported under categories such as total adverse events, serious adverse events, treatment emerging adverse events

    Measured: After first dosage on day 0 to day 14

  2. Heart rate from baseline

    Change of pulse rate from baseline

    Measured: After first dosage on day 0 to day 14

  3. Blood pressure from baseline

    Change of blood pressure from baseline. Systolic and diastolic blood pressure will be assessed

    Measured: After first dosage on day 0 to day 14

  4. Temperature from baseline

    Change of axillary temperature from baseline

    Measured: After first dosage on day 0 to day 14

  5. Respiratory rate from baseline

    Change of respiratory rate from baseline

    Measured: After first dosage on day 0 to day 14

  6. Creatinine value from baseline

    Change of creatinine value from baseline

    Measured: After first dosage on day 0 to day 14

  7. Alanine aminotransferase value from baseline

    Change of alanine aminotransferase value from baseline

    Measured: After first dosage on day 0 to day 14

  8. Aspartate aminotransferase value from baseline

    Change of aspartate aminotransferase value from baseline

    Measured: After first dosage on day 0 to day 14

  9. Total bilirubin value from baseline

    Change of total bilirubin value from baseline

    Measured: After first dosage on day 0 to day 14

  10. Sodium value from baseline

    Change of sodium value from baseline

    Measured: After first dosage on day 0 to day 14

  11. Potassium value from baseline

    Change of potassium value from baseline

    Measured: After first dosage on day 0 to day 14

  12. Blood urea nitrogen value from baseline

    Change of blood urea nitrogen value from baseline

    Measured: After first dosage on day 0 to day 14

  13. Haemoglobin value from baseline

    Change of haemoglobin value from baseline

    Measured: After first dosage on day 0 to day 14

  14. Red blood cell count from baseline

    Change of red blood cell count from baseline

    Measured: After first dosage on day 0 to day 14

  15. Mean corpuscular volume from baseline

    Change of mean corpuscular volume from baseline

    Measured: After first dosage on day 0 to day 14

  16. Mean corpuscular haemoglobin value from baseline

    Change of mean corpuscular haemoglobin value from baseline

    Measured: After first dosage on day 0 to day 14

  17. Mean corpuscular haemoglobin concentration from baseline

    Change of mean corpuscular haemoglobin concentration from baseline

    Measured: After first dosage on day 0 to day 14

  18. Platelets value from baseline

    Change of platelets value from baseline

    Measured: After first dosage on day 0 to day 14

  19. White blood cell count from baseline

    Change of white blood cell count from baseline

    Measured: After first dosage on day 0 to day 14

  20. Neutrophils value from baseline

    Change of neutrophils value from baseline

    Measured: After first dosage on day 0 to day 14

  21. Lymphocytes value from baseline

    Change of lymphocytes value from baseline

    Measured: After first dosage on day 0 to day 14

  22. Monocytes value from baseline

    Change of monocytes value from baseline

    Measured: After first dosage on day 0 to day 14

  23. Eosinophils value from baseline

    Change of eosinophils value from baseline

    Measured: After first dosage on day 0 to day 14

  24. Basophils value from baseline

    Change of basophils value from baseline

    Measured: After first dosage on day 0 to day 14

  25. Prothrombin time from baseline

    Change of prothrombin time value from baseline

    Measured: After first dosage on day 0 to day 14

  26. Activated partial thromboplastin time from baseline

    Change of activated partial thromboplastin time value from baseline

    Measured: After first dosage on day 0 to day 14

  27. Protein in urine from baseline

    Change of proteine in urine from baseline

    Measured: After first dosage on day 0 to day 14

  28. Blood in urine from baseline

    Change of blood in urine from baseline

    Measured: After first dosage on day 0 to day 14

Secondary outcomes (7)
  1. Cmax of oxantel pamoate

    Peak Plasma Concentration (Cmax) of oxantel pamoate, if detectable

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  2. Tmax of oxantel pamoate

    Time to reach Cmax (Tmax), in case of plasma concentration determined.

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  3. AUC of oxantel pamoate

    Area under the curve (AUC) of the plasma concentration determined.

    Measured: Plasma samples taken pre-dose -0.5 hours, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  4. AUC (0-t) of oxantel pamoate

    Concentration from time zero to the last quantifiable concentration at time t, in case plasma concentration can be determined.

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  5. T1/2 of oxantel pamoate

    The plasma elimination half-life, In case plasma concentration can be determined.

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  6. AUC (tau) of oxantel pamoate

    The area under the plasma concentration curve over dosing interval, in case plasma concentration can be determined.

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

  7. AUC (0-∞) of oxantel pamoate

    The AUC of the plasma concentration from time zero to infinity with extrapolation of the terminal phase, In case plasma concentration can be determined.

    Measured: Plasma samples taken pre-dose -0.5 hours prior first dose, then 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after first dose and 1 hour, 3 hours, 5 hours, 8 hours, 12 hours, 24 hours after third dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Sep 2024
  2. Study start27 Jan 2025
  3. Primary completion8 Apr 2025
  4. Study completion8 Apr 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
45 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06606860
Sponsor's protocol ID
P1773-22A
Acronym
HELP-OXA
Status last verified
Aug 2025
First submitted
12 Sep 2024
Last updated
28 Aug 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Oxantel Pamoate in people with Healthy, run by Swiss Tropical & Public Health Institute at 1 site in Tanzania.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Tanzania. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

General safety (number, frequency, severity, seriousness and duration of adverse events) (time frame: After first dosage on day 0 to day 14). The study lists 28 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Aug 2025.

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