Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/29/2025

Reconstitution of Botulinum Toxin Type A Products

General Guidelines

  • The Centers for Disease Control and Prevention (CDC) guidelines address botulinum antitoxin for treating botulism poisoning, which is fundamentally different from cosmetic/therapeutic botulinum toxin products like Xeomin 1, 2, 3
  • Botulinum antitoxin neutralizes circulating toxin in poisoning cases, while Xeomin is a purified neurotoxin used therapeutically 5

Reconstitution Protocol

  • For 50 units of Xeomin, add 1.25 mL of preservative-free 0.9% sodium chloride to achieve a concentration of 4 units per 0.1 mL 1
  • For 100 units of Xeomin, add 2.5 mL of preservative-free 0.9% sodium chloride to achieve a concentration of 4 units per 0.1 mL 1
  • Alternative dilution: add 2.0 mL to 100 units for a concentration of 5 units per 0.1 mL 1

Key Reconstitution Principles

  • Use preservative-free 0.9% sodium chloride for injection only 1
  • Inject diluent slowly and gently into the vial to avoid foaming 1
  • Rotate vial gently; do not shake vigorously 1
  • Use reconstituted solution within 24 hours when stored at 2-8°C 5

REFERENCES

4

Botulinum Antitoxin Therapy [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025