Evaluating TYNADOTE® for treating acetaminophen overdose

An Exploratory Study to Evaluate the Efficacy and Safety of TYNADOTE® Combined N-acetylcysteine in the Treatment of Acetaminophen Overdose

Phase 2 Interventional Sinew Pharma Inc. · NCT05557448

This study is testing if TYNADOTE® can help people who have overdosed on acetaminophen feel better and recover more effectively when given alongside standard treatment.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment24 (estimated)
Ages20 Years and up
SexAll
SponsorSinew Pharma Inc. Industry-sponsored
Locations1 site (Taipei, Beitou District)
Trial IDNCT05557448 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to assess the efficacy and safety of TYNADOTE® in patients who have experienced an acetaminophen overdose. The study will involve a 21-day treatment period where eligible participants will be randomized to receive either TYNADOTE® or a placebo alongside standard intravenous N-acetylcysteine (NAC) therapy. Participants will undergo various assessments, including vital sign monitoring and blood tests to evaluate liver function and drug concentration levels. The goal is to determine if TYNADOTE® can improve outcomes in patients suffering from acute liver failure due to acetaminophen toxicity.

Who should consider this trial

Good fit: Ideal candidates for this study are hospitalized patients over 20 years old who have ingested acetaminophen in amounts exceeding 150 mg/kg.

Not a fit: Patients with severe liver failure or those requiring immediate liver transplantation will not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve recovery outcomes for patients with acetaminophen overdose.

How similar studies have performed: Previous studies have shown positive outcomes with NAC therapy for acetaminophen overdose, but the use of TYNADOTE® in this context is a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Poisoning and hospitalized patients taking acetaminophen.
* Acute ingestion of more than 150 mg/kg or plasma concentration of Acetaminophen is above the treatment line on single acute acetaminophen overdose nomogram.
* Male or female with age more than 20 years at Screening.
* Ability and willingness to provide informed consent, adhere to the study visit schedule and complete all study assessments.

Exclusion Criteria:

* Subjects with Sequential Organ Failure Assessment (SOFA) Score higher than 12.
* Subjects who fulfilled the King's College Hospital (KCH) Criteria for liver transplantation.
* Subjects who was conscious disturbance.
* History of allergic response(s) to N-acetylcysteine (NAC), mannitol, sucralose or related drugs.
* Subject who was unable to take medicine by oral route.
* Receiving any investigational drug within 30 days prior to first dosing.
* Subject who had attacked asthma or bronchitis combined with medication therapy within six months prior to enrollment.
* Donating greater than 150 mL of blood within two months prior to first dosing or donating plasma (e.g. plasmapheresis) within 14 days prior to first dosing. All subjects will be advised not to donate blood for four weeks after completing the study.
* Subject is pregnant or breastfeeding. Women of childbearing potential must have a negative serum pregnancy test at baseline.
* Anuria, pulmonary congestion, severe congestive heart failure, brain hemorrhage, or any conditions that in the opinion of the investigator may interfere with the evaluation of study objectives.
* The combination of poisoning contains acetaminophen and other compound.
* Body weight less than 50 kg.

Where this trial is running

Taipei, Beitou District

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HepatitisParacetamolAcetaminophenAcute liver failureN-acetylcysteineAcetaminophen overdose
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.