Doxycycline is contraindicated in pregnancy due to risks of fetal skeletal development issues such as teeth discoloration and inhibited bone growth.

Doxycycline exposure in pregnancy can lead to permanent tooth discoloration and bone deformities in the fetus; it’s generally avoided unless no alternatives exist.

Using doxycycline during pregnancy is risky as it can impair fetal bone and dental development, thus it’s prescribed only when absolutely necessary.