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Botulinum toxin type A in pregnancy.
Canadian Family Physician Médecin de Famille Canadien 2013 November
QUESTION: My patient received 62 units of botulinum toxin type A (BTX-A) for facial lines. Two weeks later, she found out that she was pregnant. Will this cause any harm to her fetus?
ANSWER: Botulinum toxin is not expected to be present in systemic circulation following proper intramuscular or intradermal injection. Moreover, BTX-A, which has a high molecular weight, does not appear to cross the placenta. From the 38 pregnancies reported in the literature, including women who had botulism poisoning during pregnancy, exposure to BTX-A does not appear to increase the risk of adverse outcome in the fetus.
ANSWER: Botulinum toxin is not expected to be present in systemic circulation following proper intramuscular or intradermal injection. Moreover, BTX-A, which has a high molecular weight, does not appear to cross the placenta. From the 38 pregnancies reported in the literature, including women who had botulism poisoning during pregnancy, exposure to BTX-A does not appear to increase the risk of adverse outcome in the fetus.
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