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Pregnancy & Breastfeeding Resources
Current Studies at Motherisk
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Study seeks women between 4 and 12 weeks in their pregnancy with morning sickness (NVP)
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Pregnancy in Women with Multiple Sclerosis
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Environmental Exposures and Children's Health
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Alcohol Use during Pregnancy
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Control of Hypertension in Pregnancy Study
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Folic Acid Before and During Pregnancy
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Lamisil in Pregnancy
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Meridia in Pregnancy
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Autoimmune Diseases in Pregnancy Project
Antihistamines
Safety of antihistamines during pregnancy and lactation
Miranda So, RPh, Pina Bozzo, Miho Inoue, MD and Adrienne Einarson, RNMay 2010
QUESTION
Many of my pregnant and breastfeeding patients suffer from allergies and frequently ask me about the safety of antihistamines during pregnancy and breastfeeding. Should I advise them to use the older sedating medications? I have heard that they might be safer than the newer nonsedating class of drugs. Or have the newer ones been studied as well?
ANSWER
First-generation antihistamines are considered safe to use during pregnancy. There are relatively fewer data on the non sedating second-generation antihistamines; however, published studies are reassuring. All antihistamines are considered safe to use during breastfeeding, as minimal amounts are excreted in the breast milk and would not cause any adverse effects on a breastfeeding infant.
QUESTION
Beaucoup de mes patientes enceintes ou qui allaitent souffrent dallergies et me demandent souvent des questions à propos de linnocuité des antihistaminiques durant la grossesse et lallaitement. Devrais-je leur conseiller dutiliser les plus anciens sédatifs? Jai entendu dire quils étaient peut-être plus sécuritaires que les plus récentes classes de médicaments non sédatifs, à moins que les plus récents produits aient aussi fait lobjet détudes.
RÉPONSE
Lutilisation des antihistaminiques de la première génération est considéréesécuritaire pendant la grossesse. Il y a relativement moins de données sur les antihistaminiques non sédatifs de la deuxième génération; par ailleurs, les études publiées sont rassurantes. Tous les antihistaminiques sont considérés sécuritaires durant lallaitement, étant donné les quantités minimes passant dans le lait maternel, qui ne devraient pas causer deffets indésirables chez le nourrisson allaité.
[full story]
Further Reading
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Treating the common cold during pregnancy
Aida Erebara, MD, Pina Bozzo, Adrienne Einarson, RN and Gideon Koren, MD FRCPC












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