I get really really bad hayfever. After about 10 mins out in the pollen/direct sunlight I get a rash and the full eye watering/throat itching experience.
My usual anti-histamine is a drug called Telfast (in Oz) and Allegra (in the US) the active ingredient is Fexofenadine Hydrochloride.
The studies I can find do show that this is excreted into breastmilk but that there doesn't appear to be any adverse affect on the baby (is a non-drowsy).
Obviously however I would prefer my baby doesn't get any of the drug. Does anyone know any anti-histamines that are OK to take during breastfeeding?