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Non Inferiority Study of a Reduced Dose of Activated Charcoal on Rivaroxaban Pharmacokinetics.

Non Inferiority Study of a Reduced Dose of Activated Charcoal on Rivaroxaban Pharmacokinetics.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04767776
Acronym
RICHAR2
Enrollment
12
Registered
2021-02-23
Start date
2022-01-03
Completion date
2022-11-04
Last updated
2022-12-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

Rivaroxaban,, Activated charcoal, Pharmacokinetics, Poisoning

Brief summary

Rivaroxaban is a direct oral anticoagulant that target specifically activated factor X. Bleeding events related to rivaroxaban are the consequence of physiopathologic, pharmacokinetic issues or poisoning. A recent study, in healthy subjects, shows that activated charcoal can reduce significantly exposition to rivaroxaban. However, no results are available on the minimal dose of activated charcoal necessary in rivaroxaban poisoning. The objective of this study is to evaluate the effect of 4 dosing regimen activated charcoal on rivaroxaban pharmacokinetics. It corresponds to a randomised open trial with an incomplete cross over design (3 occasions). It will enrol 12 healthy subjects. Four treatments modalities will be studied: rivaroxaban with 50g, 24g, 12g and 6g of activated charcoal administrated 3 hours after rivaroxaban intake.

Interventions

DRUGRivaroxaban

rivaroxaban 40 mg/day (1 day).

Activated charcoal 2 hours after rivaroxaban administration (1 day).

Sponsors

Centre Hospitalier Universitaire de Saint Etienne
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
MALE
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

* Affiliated or beneficiary of a social security category * Having signed the inform consent form * Having signed the biologic consent form * Men aged between 18 and 40 years * Weight between 55 and 92 kilogram * normal clinical exam * normal biological exam

Exclusion criteria

* Contra-indication to rivaroxaban * Contra-indication to activated charcoal * With a history of hemorrhagic disease * Smoker * Organic lesion likely to bleed * Severe liver disease * Severe kidney failure * Gastroduodenal ulcers * Any medication taken during the week prior to the start of the study * Consumption of grapefruit juice * Routine ingestion of excessive amounts of coffee, tea, chocolate and/or caffeinated beverages * Practice of violent sports * Fructose intolerance * Glucose-galactose malabsorption syndrome or sucrase-isomaltase deficiency syndrome * Notable medical history (cardiovascular pathology, pulmonary, neurology ...)

Design outcomes

Primary

MeasureTime frameDescription
plasma concentrations of rivaroxaban1, 2, 2.5, 3, 3.5, 4, 5, 7, 9, 12, 24 hours after rivaroxaban administrationrivaroxaban pharmacokinetics

Secondary

MeasureTime frameDescription
Adverse events24 hour after rivaroxaban administrationAnalysis adverse events related to the administration of treatment.

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026