Safe Antibiotics for Pregnant Women

First-Line Safe Antibiotics

The American College of Obstetricians and Gynecologists recommends penicillins, such as amoxicillin, as the primary choice for most infections during pregnancy, with reproduction studies showing no evidence of fetal harm at doses up to 3-6 times the human dose 1, 2
Cephalosporins, particularly cephalexin, are equally safe first-line alternatives and should be prioritized for patients with non-anaphylactic penicillin allergies 1, 2
The Centers for Disease Control and Prevention recommends azithromycin as a safe option during pregnancy for chlamydial infections, with no adverse effects reported in studies 1, 3

The American College of Obstetricians and Gynecologists recommends penicillin G for group B streptococcal prophylaxis, with a dosage of 5 million units IV initially, then 2.5 million units IV every 4 hours until delivery 1
The Centers for Disease Control and Prevention recommends erythromycin base as a first-line treatment for chlamydial infections in pregnancy, with a dosage of 500 mg orally four times daily for 7 days 3, 4, 6

The American College of Obstetricians and Gynecologists recommends avoiding tetracyclines, including doxycycline, after the fifth week of pregnancy due to dental staining and potential bone growth inhibition in the fetus 1, 3, 4
The Centers for Disease Control and Prevention recommends avoiding fluoroquinolones, such as ciprofloxacin and levofloxacin, due to potential fetal toxicity affecting cartilage development 1

The American College of Obstetricians and Gynecologists recommends screening all pregnant women for asymptomatic bacteriuria and Group B Streptococcus at 35-37 weeks gestation 1
The Centers for Disease Control and Prevention recommends treating syphilis with penicillin, as it is the only proven effective treatment for preventing maternal transmission and treating fetal infection 7, 8