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Botulinum toxin type b Pregnancy and Breastfeeding Warnings

Botulinum toxin type b is also known as: Myobloc

Botulinum toxin type b Pregnancy Warnings

Botulinum toxin type B has been assigned to pregnancy category C by the FDA. Animal studies have revealed evidence of maternal toxicity, abortions, and/or fetal malformations at high doses. There are no controlled data in human pregnancy. Botulinum toxin type B is only recommended for use during pregnancy when benefit outweighs risk. The manufacturer recommends counseling all patients who are pregnant at initiation of treatment, or who become pregnant during the course of treatment, to the possible risks including fetotoxicity and abortion reported in animal studies.

See references

Botulinum toxin type b Breastfeeding Warnings

There are no data on the excretion of botulinum toxin type B into human milk. Because botulinum toxin type B is not expected to appear in the systemic circulation, it would not be available for excretion into breast milk. The manufacturer recommends that caution be used when administering botulinum toxin type B to nursing women.

See references

References for pregnancy information

  1. "Product Information. Myobloc (botulinum toxin type B)" Elan Pharmaceuticals, S. San Francisco, CA.
  2. Briggs GG, Freeman RK, Yaffe SJ.. "Drugs in Pregnancy and Lactation. 7th ed." Philadelphia, PA: Lippincott Williams & Wilkins (2005):
  3. "Product Information. Botox (botulinum toxin type A)" Allergan Inc, Irvine, CA.

References for breastfeeding information

  1. Briggs GG, Freeman RK, Yaffe SJ.. "Drugs in Pregnancy and Lactation. 7th ed." Philadelphia, PA: Lippincott Williams & Wilkins (2005):
  2. "Product Information. Myobloc (botulinum toxin type B)" Elan Pharmaceuticals, S. San Francisco, CA.
  3. "Product Information. Botox (botulinum toxin type A)" Allergan Inc, Irvine, CA.

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