A Drug-Drug Interaction Study of Orforglipron (LY3502970) in Healthy Overweight and Obese Participants

A Drug-Drug Interaction Study to Assess the Effect of Orforglipron on the Pharmacokinetics of Digoxin, Simvastatin, Rosuvastatin, Acetaminophen, and Midazolam in Healthy Overweight and Obese Participants

The main purpose of this study is to determine effect of orforglipron capsule formulation on the amount of digoxin, rosuvastatin, acetaminophen, midazolam, and simvastatin (each given alone and together with orforglipron) that enters the bloodstream and how long it takes the body to eliminate them when administered orally in healthy overweight and obese participants. In addition, the effect of the orforglipron tablet on the amount of simvastatin that enters the bloodstream and how long it takes the body to eliminate it will be evaluated.

The study will also assess the effect of sodium bicarbonate when administered alone with simvastatin versus orforglipron capsule containing sodium bicarbonate administered with simvastatin. The safety and tolerability of orforglipron and information about any side effects experienced will be collected.

Study will be conducted in two parts, with part 1 and 2 lasting up to approximately 23 and 24 weeks each, including the screening period.

Study Overview

• Status: Completed
• Conditions: Healthy; Overweight; Obese
• Intervention / Treatment: Drug: Midazolam; Drug: Simvastatin; Drug: Rosuvastatin; Drug: Digoxin; Drug: Orforglipron; Drug: Acetaminophen; Drug: Sodium Bicarbonate

• Study Type: Interventional
• Enrollment (Actual): 50
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Florida
    • Daytona Beach, Florida, United States, 32117
      • Fortrea Clinical Research Unit Inc.
  • Texas
    • Dallas, Texas, United States, 75247
      • Fortrea Clinical Research Unit Inc.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Participants who are overtly healthy as determined by medical history and physical examination.
• Have body mass index (BMI) equal to or greater than 27 kilograms per meter squared (kg/m²), inclusive, at screening.
• Have an estimated glomerular filtration rate equal to or greater than 60 milliliters per minute (mL/min).
• Males and females who agree to follow contraceptive requirements, or women not of childbearing potential (WNOCBP).
• Have venous access sufficient to allow for blood sampling.

Exclusion Criteria:

• Have any type of diabetes with hemoglobin A1c (HbA1c) level of 6.5 percent (%) or greater.
• Have significant history of or currently have Major Depressive Disorder or psychiatric disorder within the last 2 years.
• Obesity induced by other endocrine disorders, such as Cushing's syndrome or Prader-Willi syndrome.
• Have known clinically significant gastric emptying abnormality.
• Have undergone bariatric surgery (for example: Lap-Band, Gastric Bypass)
• Have a known self or family history (first-degree relative) of multiple endocrine neoplasia type 2A or type 2B, thyroid C-cell hyperplasia, or any form of thyroid cancer.
• Have an abnormal 12-lead electrocardiogram (ECG) at screening.
• Have significant previous or current history of comorbidities capable of significantly altering the absorption, metabolism, or elimination of drug.
• Participants must not be currently participating in or completed a clinical trial within the last 90 days.
• Have a known allergy or hypersensitivity to midazolam, simvastatin, rosuvastatin, or digoxin.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Cohort 1: Oral Drug Dosing With or Without Orforglipron Co-Administration; Participants received single oral doses as follows:Day 1: 20 milligram(mg) simvastatin; Day 2: 0.25 mg digoxin; Day 7:20 mg simvastatin + 600 mg sodium bicarbonate; Day 8: 20 mg rosuvastatin; Day 10: 1000 mg acetaminophen; Day 12: 0.2 mg midazolam;Day 14: 1 mg Orforglipron, followed by 1000 mg acetaminophen administered 2 hours (±10 minutes) later (staggered); Day 15: 1 mg Orforglipron; Days 16-97: Orforglipron administered once daily with dose escalation every 14 days:1 mg (Days 16-27), 3 mg (Days 28-41),6 mg (Days 42-55),12 mg (Days 56-69),24 mg (Days 70-83),36 mg (Days 84-97). Days 98-110: 36 mg Orforglipron administered once daily with co administration as follows:Day 98: 20 mg simvastatin (simultaneous); Day 99: 0.25 mg digoxin (simultaneous); Day 104: 20 mg simvastatin (staggered); Day 105:20 mg rosuvastatin (simultaneous); Day 107: 1000 mg acetaminophen (staggered); Day 109:0.2 mg midazolam (simultaneous); Day 111: 20 mg Orforglipron tablet + 20 mg simvastatin (simultaneous).	Drug: Midazolam; Administered orally.; Drug: Simvastatin; Administered orally.; Drug: Rosuvastatin; Administered orally.; Drug: Digoxin; Administered orally.; Drug: Orforglipron; Administered orally.; Other Names: LY3502970; Drug: Acetaminophen; Administered orally.; Drug: Sodium Bicarbonate; Administered orally.
Experimental: Cohort 2: Oral Drug Dosing With or Without Orforglipron Co-Administration; Participants received single oral doses as follows: Day 1: 20 mg Simvastatin; Day 2: 0.25 mg Digoxin; Day 7: 20 mg Simvastatin + 600 mg Sodium Bicarbonate; Day 9: 1 mg Orforglipron capsule; Days 10-90: Participants received orforglipron capsule orally QD for 12 weeks, beginning at 1 mg QD. The dose was escalated every 14 days as follows: 1 mg (Days 10-22), 3 mg (Days 23-36), 6 mg (Days 37-50), 12 mg (Days 51-64), 24 mg (Days 65-78), and 36 mg (Days 79-90). Participants continued 36 mg Orforglipron QD until Day 100, with co-administration of the following drugs; Day 93: 20 mg Simvastatin (simultaneous); Day 94: 0.25 mg Digoxin (simultaneous); Day 99: 20 mg Simvastatin administered 2 hours ±10 minutes after Orforglipron administration (staggered dosing); Day 101: 20 mg Orforglipron tablet + 20 mg Simvastatin (simultaneous)	Drug: Simvastatin; Administered orally.; Drug: Digoxin; Administered orally.; Drug: Orforglipron; Administered orally.; Other Names: LY3502970; Drug: Sodium Bicarbonate; Administered orally.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pharmacokinetics (PK): Area Under the Concentration-Time Curve From Time Zero to Infinity (AUC[0-∞]) of Simvastatin and Its Metabolite Simvastatin Acid Following Simultaneous Administration of Orforglipron Capsule Formulation (Cohort 1 and 2)	AUC [0-∞] of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without Orforglipron capsule were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 hours (h) post-dose; Day 98 (Cohort 1) and Day 93 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: AUC [0-∞] of Simvastatin and Its Metabolite Simvastatin Acid Following Staggered Administration of Orforglipron Capsule Formulation (Cohort 1 and 2)	AUC [0-∞] of simvastatin and its active acid metabolite (simvastatin acid) following staggered administration with or without Orforglipron capsule were reported in this outcome measure. Simvastatin was administered ~2h (±10 min) after Orforglipron capsule administration (Staggered dosing).	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 104 (Cohort 1) and Day 99 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: AUC [0-∞] of Simvastatin and Its Metabolite Simvastatin Acid After Sodium Bicarbonate Coadministration (Cohort 1 and 2)	AUC [0-∞] of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without sodium bicarbonate administration were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 7 (Cohort 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: AUC [0-∞] of Digoxin (Cohort 1 and 2)		Day 2 (For Cohort 1 and 2): Pre-dose, 0.5, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, and 120h post-dose ; Day 99 (Cohort 1) and Day 94 (Cohort 2): Pre-dose, 0.5, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, and 120h post-dose
PK: AUC [0-∞] of Rosuvastatin (Cohort 1 Only)		Day 8 (Cohort 1 only): Pre-dose, 0.5, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, and 72h post-dose; Day 105 (Cohort 1 only): Pre-dose, 0.5, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, and 72h post-dose
PK: AUC [0-∞] of Acetaminophen (Cohort 1 Only)	AUC [0-∞] of acetaminophen following staggered administration with or without either 1 mg or 36 mg Orforglipron capsule were reported in this outcome measure. Acetaminophen was administered ~2h (±10 min) after Orforglipron capsule administration (Staggered dosing).	Day 10 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose; Day 14 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose; Day 107 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose
PK: AUC [0-∞] of Midazolam and Its Metabolite 1'-Hydroxymidazolam (Cohort 1 Only)	AUC [0-∞] of midazolam and its metabolite (1'-Hydroxymidazolam) following simultaneous administration with or without Orforglipron capsule were reported in this outcome measure.	Day 12 (Cohort 1 only): Pre-dose, 0.5, 0.75, 1, 2, 3, 4, 6, 9, 12, and 24h post-dose; Day 109 (Cohort 1 only): Pre-dose, 0.5, 0.75, 1, 2, 3, 4, 6, 9, 12, and 24h post-dose
PK: Maximum Observed Concentration (Cmax) of Simvastatin and Its Metabolite Simvastatin Acid Following Simultaneous Administration of Orforglipron Capsule Formulation (Cohort 1 and 2)	Cmax of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without Orforglipron capsule were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 98 (Cohort 1) and Day 93 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: Cmax of Simvastatin and Its Metabolite Simvastatin Acid Following Staggered Administration of Orforglipron Capsule Formulation (Cohort 1 and 2)	Cmax of simvastatin and its active acid metabolite (simvastatin acid) following staggered administration with or without Orforglipron capsule were reported in this outcome measure. Simvastatin was administered ~2h (±10 min) after Orforglipron capsule administration (Staggered dosing).	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 104 (Cohort 1) and Day 99 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: Cmax of Simvastatin and Its Metabolite Simvastatin Acid After Sodium Bicarbonate Coadministration (Cohort 1 and 2)	Cmax of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without sodium bicarbonate administration were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 7 (Cohort 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: Cmax of Digoxin (Cohorts 1 and 2)		Day 2 (For Cohort 1 and 2): Pre-dose, 0.5, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, and 120h post-dose; Day 99 (Cohort 1) and Day 94 (Cohort 2): Pre-dose, 0.5, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, and 120h post-dose
PK: Cmax of Rosuvastatin (Cohort 1 Only)		Day 8 (Cohort 1 only): Pre-dose, 0.5, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, and 72h post-dose; Day 105 (Cohort 1 only): Pre-dose, 0.5, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 60, and 72h post-dose
PK: Cmax of Acetaminophen (Cohort 1 Only)	Cmax of acetaminophen following staggered administration with or without either 1 mg or 36 mg Orforglipron capsule were reported in this outcome measure. Acetaminophen was administered ~2h (±10 min) after Orforglipron capsule administration (Staggered dosing).	Day 10 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose; Day 14 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose; Day 107 (Cohort 1 only): Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, and 24h post-dose
PK: Cmax of Midazolam and Its Metabolite 1'-Hydroxymidazolam (Cohort 1 Only)	Cmax of Midazolam and its metabolite (1'-Hydroxymidazolam) following simultaneous administration with or without Orforglipron capsule is reported in this outcome measure.	Day 12 (Cohort 1 only): Pre-dose, 0.5, 0.75, 1, 2, 3, 4, 6, 9, 12, and 24h post-dose; Day 109 (Cohort 1 only): Pre-dose, 0.5, 0.75, 1, 2, 3, 4, 6, 9, 12, and 24h post-dose

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
PK: AUC [0-∞] of Simvastatin and Its Metabolite Simvastatin Acid Following Administration of Orforglipron Tablet Formulation (Cohort 1 and 2)	AUC [0-∞] of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without Orforglipron tablet were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 111 (Cohort 1) and Day 101 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose
PK: Cmax of Simvastatin and Its Metabolite Simvastatin Acid Following Administration of Orforglipron Tablet Formulation (Cohort 1 and 2)	Cmax of simvastatin and its active acid metabolite (simvastatin acid) following simultaneous administration with or without Orforglipron tablet were reported in this outcome measure.	Day 1 (For Cohorts 1 and 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24 h post-dose; Day 111 (Cohort 1) and Day 101 (Cohort 2): Pre-dose, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, and 24h post-dose

Collaborators and Investigators

• Sponsor: Eli Lilly and Company
• Investigators: Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST), Eli Lilly and Company

Study record dates

Study Major Dates

• Study Start (Actual): January 2, 2024
• Primary Completion (Actual): July 10, 2024
• Study Completion (Actual): July 10, 2024

Study Registration Dates

• First Submitted: December 16, 2023
• First Submitted That Met QC Criteria: December 16, 2023
• First Posted (Actual): January 2, 2024

Study Record Updates

• Last Update Posted (Actual): May 22, 2026
• Last Update Submitted That Met QC Criteria: April 29, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Nutrition Disorders; Overnutrition; Body Weight; Pathological Conditions, Signs and Symptoms; Nutritional and Metabolic Diseases; Signs and Symptoms; Overweight; Obesity; Sulfur Compounds; Organic Chemicals; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Hydrocarbons; Hydrocarbons, Cyclic; Carbohydrates; Naphthalenes; Polycyclic Aromatic Hydrocarbons; Hydrocarbons, Aromatic; Polycyclic Compounds; Glycosides; Anilides; Amides; Aniline Compounds; Amines; Acetanilides; Inorganic Chemicals; Pyrimidines; Steroids; Fused-Ring Compounds; Hydrocarbons, Halogenated; Benzazepines; Sulfonamides; Sulfones; Benzodiazepines; Fluorobenzenes; Hydrocarbons, Fluorinated; Sodium Compounds; Carbon Compounds, Inorganic; Lovastatin; Digitalis Glycosides; Cardenolides; Cardiac Glycosides; Cardanolides; Carbonates; Carbonic Acid; Bicarbonates; Rosuvastatin Calcium; Acetaminophen; Midazolam; Digoxin; Simvastatin; orforglipron; Sodium Bicarbonate
• Other Study ID Numbers: 18631; J2A-MC-GZPG (Other Identifier: Eli Lilly and Company)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No