Which antibiotic is contraindicated during pregnancy due to safety concerns?

Which antibiotic is contraindicated during pregnancy due to safety concerns?

• A. Doxycycline
• B. Azithromycin
• C. Erythromycin
• D. Penicillin G

Answer: (A)

In pregnancy, choose antibiotics with proven safety for the developing fetus. Doxycycline is a tetracycline, and these drugs cross the placenta and can deposit in calcium-rich tissues as teeth and bone form. This can cause permanent discoloration of the fetal teeth and enamel hypoplasia, and may affect bone growth. Because of these potential, long-lasting effects, doxycycline is contraindicated during pregnancy and is avoided in young children as well. The other options are considered safer in pregnancy when antibiotics are needed: macrolides like azithromycin and erythromycin are commonly used, and penicillin G has a long track record of safety for pregnant patients. Therefore, the antibiotic contraindicated due to safety concerns in pregnancy is doxycycline.

In pregnancy, choose antibiotics with proven safety for the developing fetus. Doxycycline is a tetracycline, and these drugs cross the placenta and can deposit in calcium-rich tissues as teeth and bone form. This can cause permanent discoloration of the fetal teeth and enamel hypoplasia, and may affect bone growth. Because of these potential, long-lasting effects, doxycycline is contraindicated during pregnancy and is avoided in young children as well.

The other options are considered safer in pregnancy when antibiotics are needed: macrolides like azithromycin and erythromycin are commonly used, and penicillin G has a long track record of safety for pregnant patients. Therefore, the antibiotic contraindicated due to safety concerns in pregnancy is doxycycline.