Sometimes it takes special measures to deal with heartburn during pregnancy because it can negatively affect asthma course, especially at night. It is very important to keep to a diet with the complete exception of caffeine, chocolate and other heartburn provocative foods, some cases require medical treatment.
In case of coexistent diseases that require basic therapy (e. g. hypertension), you need to consult a specialist in the appropriate field for correcting therapy taking into account planned a pregnancy.
Among expectorants iodine drugs or iodine-containing substances (e. g. potassium iodide), as they can affect fetal thyroid gland function.
Familiar with allergic patients antihistamines are not applicable for asthma treatment in adults, but they may be applied to treat other allergic diseases such as coexistent allergic rhinitis. They have significant limitations for use during pregnancy, especially during the first trimester. Only limited amount of drugs is applied under strict doctor’s supervision, in small dosage, and according to strict prescriptions (e. g. diphenhydramine). Modern antihistamines during pregnancy are prescribed only in cases of extreme necessity when expected benefit exceeds potential risk to the fetus (experiments of their administration during pregnancy are not enough, experiments on animals haven’t registered teratogenic effects, «B» category). Fexofenadine is currently referred to «C» category (data on its safety during pregnancy are not currently available) and generally is not applied. Mekhitazin is allowed to take with extreme caution. Astemizole and terfenadine are forbidden (arrhythmogenic effect, embryotoxic effects on animals).
FDA refers to «B» category:
«C» category:
Although pregnancy is not a contraindication for ASIT, it is not recommended to begin treatment during pregnancy. But if pregnancy appeared during ASIT, treatment may not be interrupted. One research has shown that children born from mothers who received ASIT are less exposed to risk allergies development.