NCT06366087

Sublingual Atropine Bioequivalence by Route of Administration (SABER)

A Two-Period, Two-Sequence, Two-Treatment, Single-Dose Crossover Study of Atropine Sulfate Ophthalmic Solution (1%) Administered Sublingually vs Atropine Sulfate Administered Intramuscularly for Bioequivalence Determination

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 46 (actual)
• Sponsor: Biomedical Advanced Research and Development Authority · Federal
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Accepted

Summary

A randomized, two-period, two-sequence, crossover study to assess the bioequivalence, bioavailability, and pharmacokinetics (PK) of a single dose of atropine administered sublingually (SL) or intramuscularly (IM) in healthy adult volunteers.

Detailed description

This is a randomized, two-period, two-sequence, crossover study to assess the bioequivalence, bioavailability, and pharmacokinetics (PK) of a single dose of atropine administered SL or IM in healthy adult volunteers. A total of 46 healthy male and non-pregnant female volunteers will be randomized, with the goal of obtaining at least 36 evaluable participants in the per protocol population. Additional participants may be randomized if participants are withdrawn prior to receiving one or both doses of study drug. Eligible participants will be randomized at a 1:1 ratio to receive one of two treatment dosing sequences (A \[Visit 1 SL, Visit 2 IM\] or B \[Visit 1 IM, Visit 2 SL\]). Volunteers will be screened for study participation from Days -14 to -3. Eligible participants will be enrolled and randomized to receive one of two dosing sequences (Sequence A or Sequence B) until the target enrollment for the study is met. Once randomized, each participant will receive 2 doses of atropine separated by a wash out period of 6 ±1 days. During Visit 1 (Day 1) and Visit 2 (Day 8), participants will be administered SL or IM atropine, according to their randomly assigned dosing sequence. At each dosing visit, blood samples for PK will be collected at time 0 (pre-dose) and at 13 time points post-dose at 5, 10, 15, 20, 30, 45, 60, and 90 minutes and 2, 2.5, 4, 6, and 8 hours after dosing. Participants will be discharged from the clinic after the 8-hour blood sample collection. Participants will be followed for approximately 6 days after their last dose.

Conditions

• Atropine Bioequivalence

Interventions

Type	Name	Description
DRUG	Atropine Sulfate Ophthalmic Solution USP, 1%	Atropine Sulfate Ophthalmic Solution, USP 1% manufactured by Bausch \& Lomb Americas Inc., is a sterile topical anti-muscarinic indicated for mydriasis, cycloplegia, and penalization of the healthy eye to treat amblyopia. Each mL of Atropine Sulfate Ophthalmic Solution USP, 1% contains the active ingredient atropine sulfate 10 mg, equivalent to 8.3 mg of atropine. Inactive ingredients are boric acid, hydroxypropyl methylcellulose, and water for injection, USP; hydrochloric acid and/or sodium hydroxide may be added to adjust pH (3.5 to 6.0). Atropine Sulfate Ophthalmic Solution, USP 1% will be supplied in 0.4 mL single-dose vials and will be administered as a single dose to a single participant. 100 μL of Atropine Sulfate Ophthalmic Solution, USP 1% will be given sublingually by pipette to deliver 1.0 mg of atropine sulfate. Before administration, participants will be told to swallow. Once given, participants will be told to try not to swallow for 30 seconds and then swallow normally.
DRUG	Atropine Sulfate Injection, USP 8 mg/20 mL (0.4 mg/mL)	Atropine sulfate injection, USP is a muscarinic antagonist used for temporary blockade of severe/life-threatening muscarinic effects and to treat symptomatic bradycardia. Atropine Sulfate Injection, USP, 8 mg/20 mL (0.4 mg/mL) manufactured by Fresenius Kabi is a sterile, nonpyrogenic, isotonic, clear solution of atropine sulfate in water for injection with sodium chloride sufficient to render the solution isotonic. Each mL contains atropine sulfate, 0.4 mg; benzyl alcohol, 9 mg; and sodium chloride 9 mg; it may also contain sulfuric acid for pH adjustment, pH 3.5 (3.0 to 3.8). Atropine Sulfate Injection, USP will be supplied in 8 mg/20 mL multidose vials (0.4 mg/mL). Each vial will be used to administer multiple doses to multiple participants. 2.5 mL will be injected into the mid-anterolateral thigh to deliver 1.0 mg of atropine sulfate. Vials will be dated/timed and will not be given after 24 hours of first entry.

Timeline

• Start date: 2024-04-15
• Primary completion: 2024-05-15
• Completion: 2024-05-22
• First posted: 2024-04-15
• Last updated: 2026-01-27
• Results posted: 2025-04-04

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study