Pharmaceutical stability of compounded acetylcholine chloride intraocular solution for intracoronary provocative vasospasm testing - Scorecard - MDSpire

Pharmaceutical stability of compounded acetylcholine chloride intraocular solution for intracoronary provocative vasospasm testing

  • By

  • Killian J. McCarthy

  • Ryan Greenhalgh

  • Erica MacDonald

  • Laura Cedro

  • Duane Pinto

  • Margaret Stephan

  • Eric A. Osborn

  • June 3, 2026

  • 0 min

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Clinical Scorecard: Stability Assessment of Compounded Acetylcholine Chloride Intraocular Solution for Use in Intracoronary Provocative Vasospasm Testing

At a Glance

CategoryDetail
ConditionProvocative coronary vasospasm testing
Key MechanismsCompounded acetylcholine chloride solution for intracoronary use
Target PopulationPatients experiencing persistent angina without obstructive epicardial coronary artery disease
Care SettingInvasive coronary function testing centers

Key Highlights

  • Compounded ACh solution met USP <797> stability criteria over 12 hours.
  • 96.7% of initial ACh retained at 12 hours.
  • Subvisible particulate matter within USP <788> specifications.
  • Clear and colorless solution with a pH of 4.2.

Guideline-Based Recommendations

Diagnosis

  • Invasive guidewire-based hyperemic measurement of coronary flow reserve (CFR).
  • Intracoronary provocative coronary vasospasm testing with acetylcholine chloride.

Management

  • Utilization of compounded ACh for provocative coronary vasospasm testing.

Monitoring & Follow-up

  • Assessment of compounded ACh solution appearance, pH, particulate matter, concentration, and potency.

Risks

  • Potential for adverse events associated with off-label use of compounded ACh.

Patient & Prescribing Data

Patients with signs and symptoms of myocardial ischemia without obstructive CAD.

Clinical Best Practices

  • Follow USP <797> guidelines for compounding stability.
  • Conduct potency and stability testing in accredited laboratories.
  • Use compounded ACh within 12 hours of preparation.

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