Fixed Dose Combination of COdeine + DIpyrone to Mitigate Moderate to Intense Pain Post-impacted Third Lower Molar Extraction

Pain Clinical Trial

— CODI  

Official title:

A Clinical, Multicenter, Randomized, Parallel-group, Double-blind, Double-dummy, Comparative Study of Non-inferiority of the Fixed Dose Combination of Codeine 30 mg/Dipyrone 500 mg From Eurofarma Versus Tylex® (Codeine 30 mg/Paracetamol 500 mg) in the Treatment of Moderate to Intense Pain Post-impacted Third Lower Molar Extraction

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04972292
• Other study ID #: EF174
• Status: Recruiting
• Phase: Phase 3
• Start date: November 8, 2023
• Est. completion date: February 28, 2025

Study information

• Verified date: May 2024
• Source: Eurofarma Laboratorios S.A.
• Contact: Gleyce Lima, Analyst
• Phone: 55 11 5090 8411
• Email: gleyce.lima[@]eurofarma.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A clinical, multicenter, randomized, parallel-group, double-blind, double-dummy, comparative study of non-inferiority. ⚠️Study will only be conducted in research centers in Brazil (please do not send e-mail if your center is outside brazil).

Description:

Subjects aged between 16 and 35 years old, with indicated surgical removal of impacted third lower molar, will be randomized at a 1:1 ratio to receive the FDC of codeine 30 mg/dipyrone 500 mg from Eurofarma Laboratórios SA (experimental drug) or the FDC of codeine 30 mg/paracetamol 500 mg (Tylex® - Janssen-Cilag Farmacêutica Ltda) as tablets for up to three (3) days. Subjects whose surgery lasts no more than 40 minutes and showing moderate to intense postoperative pain up to four (4) hours after surgery will be randomized. The first study drug administration will take place at the clinical investigation site when the postsurgical pain becomes moderate/intense (≥ 40 mm at a visual analogue scale [VAS] of 0-100 mm). Then, subjects will be instructed to use the study treatment whenever it is necessary for pain relief, respecting a minimal interval of six (6) hours between two administrations, for up to three (3) days (72 hours after the initial dose). Subjects will evaluate the pain relief using a 5-point categorical scale (0 = no relief, 1 = little relief, 2 = some relief, 3 = a lot of relief, 4 = complete relief) in 1-hour intervals (1, 2, 3, 4, 5 and 6h). The sum of the relief scores over 6 hours determines the TOTPAR6 Subjects who meet all of the eligibility criteria will be randomized to one of the following treatment groups: Group 1: FDC of codeine 30 mg/dipyrone 500 mg from Eurofarma Laboratórios SA (experimental drug) - Subjects randomized to this group will receive one (1) experimental drug tablet + one (1) Tylex® placebo tablet when the postoperative pain becomes moderate to intense (≥ 40 mm at a VAS of 0-100 mm). Group 2: Tylex® (codeine 30 mg/paracetamol 500 mg) - Subjects randomized to this group will receive one (1) Tylex® tablet (codeine 30 mg/paracetamol 500 mg) + one (1) FDC placebo tablet when the postoperative pain becomes moderate to intense (≥ 40 mm at a VAS of 0-100 mm). The subjects will be allowed to use the rescue medication if necessary: Paracetamol 500 mg (Tylenol® 500 mg). All subjects must have three (3) on-site visits at the research site. Three (3) phone calls will take place between the on-site visits: Screening visit (Vs), randomization visit (Vr), first phone call (CT1), second phone call (CT2), third phone call (CT3), final visit (Vf). The period for including subjects in the study will start after the required ethical and regulatory approvals and its estimated duration will be of up to 12 months. The approximate study duration will be of 9 ± 2 days for each subject. ⚠️Study will only be conducted in research centers in Brazil (please do not send e-mail if your center is outside brazil).

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 288
• Est. completion date: February 28, 2025
• Est. primary completion date: October 30, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 16 Years to 35 Years

Eligibility

Inclusion Criteria:

1. Aged between 16 and 35 years old (inclusive).

2. Presence of impacted third lower molar with surgical removal indicated (diagnosed via panoramic x-ray within six [6] months before inclusion in the study), at vertical, mesioangular or horizontal position as per the Winter's classification, provided that

it belongs to the following Pell & Gregory's classes:

3. Maximum surgery duration of 30 minutes, counted from the initial incision to the impacted third molar extraction.

4. Moderate to intense postoperative pain (= 40 mm at a VAS of 0-100 mm) up to four (4) hours after the end of the surgery (counted from the end of the suture).

5. Informed Consent Form (ICF) and Informed Assent Form (IAF) signature, when applicable, before performing any study procedure.

Exclusion Criteria:

1. Known hypersensitivity to dipyrone or to other pirazolones or pirazolidines (e.g.:

phenazone, propyphenazone, isopropylaminophenazone, phenylbutazone, oxyphenbutazone), including history of previous agranulocytosis with one of these substances;

2. Known hypersensitivity to codeine or to other opioid agents;

3. Known hypersensitivity to paracetamol or to any component of the Tylex® formulation;

4. Bone marrow function impairment (e.g.: after cytostatic treatment) or hematopoietic system diseases;

5. History of bronchospasm or other anaphylactoid reactions (e.g.: hives, rhinitis, angioedema) associated with the use of analgesics, such as salicylates, paracetamol, diclofenac, ibuprofen, indomethacin, naproxen;

6. History of significant hypotensive reaction associated with the administration of dipyrone;

7. Abuse of illegal drugs, including alcoholism; emotional instability and/or previous attempt of suicide;

8. Pregnancy or breastfeeding.

9. Women of childbearing potential who do not agree to use a known effective birth control method, unless the participants are surgically sterile or state they are expressly free of the risk of getting pregnant for not having sexual intercourse or for having sexual intercourse with no reproductive potential.

10. Participation in a clinical research protocol within the past 12 months, unless the investigator considers that the participation in the study could result in a direct benefit to the subject.

11. Presence of any condition that, in the investigator's opinion, would make the subject ineligible to participate in the study.

Related Conditions & MeSH terms

• Pain
• Tooth, Impacted

Intervention

Drug:
• FDC of codeine 30 mg/dipyrone 500 mg
Group 1: receive one (1) experimental drug tablet (FCD of codeine 30mg/dipyrone 500mg) + one (1) Tylex® placebo.
• Tylex
Group 2: receive one (1) Tylex® tablet (codeine 30 mg/paracetamol 500 mg) + one (1) FDC placebo tablet

Locations

Country	Name	City	State
Brazil	Eurofarma Laboratórios S.A	Brasil	São Paulo
Brazil	Eurofarma Laboratorios S.A	São Paulo	SP

Sponsors (1)

Lead Sponsor	Collaborator
Eurofarma Laboratorios S.A.

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	sum of pain relief scores over 6 hours (TOTPAR6)	After the first study treatment dose is given, subjects will evaluate the pain relief using a 5-point categorical scale (0 = no relief, 1 = little relief, 2 = some relief, 3 = a lot of relief, 4 = complete relief) in 1-hour intervals (1, 2, 3, 4, 5 and 6 hours). The sum of the relief scores over 6 hours determines the TOTPAR6, which ranges from 0 to 24, with a higher score indicating more pain relief.	6 hours
Secondary	Sum of pain relief scores over four (4) hours (TOTPAR4)	After the first study treatment dose is given, subjects will evaluate the pain relief using a 5-point categorical scale (0 = no relief, 1 = little relief, 2 = some relief, 3 = a lot of relief, 4 = complete relief) in 1-hour intervals (1, 2, 3, 4 hours)	4 hours