Potential foreign body emboli associated with botulinum toxin A injections

Area of Science:

• Dermatology
• Cosmetic Procedures
• Materials Science

Background:

• Botox Cosmetic (OnabotulinumtoxinA) is widely used for dynamic rhytids.
• While generally safe, potential complications include foreign body embolization.
• This risk stems from particles potentially introduced during reconstitution.

Observation:

• A case report identified a rubber particle within a reconstituted Botox vial.
• The particle originated from the rubber stopper during the reconstitution process.
• Such particles pose a theoretical risk of embolization.

Findings:

• The risk of embolization from these particles is considered very low.
• Particles are unlikely to pass through standard needle orifices.
• Specialized needles (e.g., No Kor needles) can prevent particle injection.

Implications:

• Eliminating this risk enhances patient safety in cosmetic procedures.
• Modifications to the manufacturing process could further mitigate risks.
• Clinicians should visually inspect Botox before administration and consider needle choice.