Allergy symptoms like hay fever can be troublesome in pregnancy. Certain antihistamines have more reassuring safety data and are sometimes recommended, while others are preferred to avoid. Because recommendations differ by product and region, the safest step is to ask a pharmacist or doctor which specific antihistamine is suitable for you.
Non-medicine measures can also help, such as avoiding known triggers, keeping windows closed during high pollen counts, and saline nasal rinses. Steroid nasal sprays are sometimes considered appropriate under guidance for persistent symptoms.
Avoid combination allergy products that include decongestants unless advised, as oral decongestants are often not recommended in pregnancy. If your allergy symptoms are severe, or if you ever have signs of a serious allergic reaction like swelling of the lips or throat or difficulty breathing, seek emergency care.