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. Author manuscript; available in PMC: 2025 Aug 1.
Published in final edited form as: Am J Obstet Gynecol. 2023 Dec 19;231(2):250.e1–250.e16. doi: 10.1016/j.ajog.2023.12.020

Table 2.

Top 15 commonly used prescription medications throughout pregnancy among ages 12–54 years in MarketScan (2011–2020) and MAX/TAF (2011–2018)

Rank Pre-LMP 1st Trimester 2nd Trimester 3rd Trimester
Medication % Medication % Medication % Medication %

MarketScan
1 Estradiol 12.9 Ondansetron 12.7 Ondansetron 6.4 Levothyroxine 5.5
2 Acetaminophen 6.0 Progesterone 7.7 Levothyroxine 5.6 Azithromycin 4.9
3 Amoxicillin 5.5 Amoxicillin 5.6 Amoxicillin 5.1 Amoxicillin 4.6
4 Azithromycin 5.2 Levothyroxine 5.5 Azithromycin 4.7 Acetaminophen 4.0
5 Levothyroxine 4.5 Estradiol 5.4 Nitrofurantoin 4.4 Nitrofurantoin 3.7
6 Hydrocodone 4.2 Promethazine 5.1 Acetaminophen 3.7 Valacyclovir 3.5
7 Progesterone 3.5 Nitrofurantoin 4.8 Metronidazole 2.8 Ondansetron 3.3
8 Doxycycline 3.3 Azithromycin 4.4 Promethazine 2.4 Fluconazole 2.5
9 Fluconazole 3.0 Doxycycline 3.8 Cephalexin 2.1 Metronidazole 2.5
10 Ibuprofen 2.8 Acetaminophen 3.5 Albuterol 1.9 Cephalexin 2.2
11 Fluticasone 2.5 Metronidazole 2.6 Doxylamine 1.9 Terconazole 2.2
12 Methylprednisolone 2.5 Cephalexin 2.3 Fluconazole 1.9 Sertraline 1.9
13 Prednisone 2.2 Fluconazole 1.9 Terconazole 1.9 Hydrocodone 1.8
14 Sertraline 2.1 Hydrocodone 1.9 Sertraline 1.7 Albuterol 1.7
15 Albuterol 2.0 Sertraline 1.9 Fluticasone 1.4 Nifedipine 1.7
MAX/TAF
1 Acetaminophen 12.9 Ondansetron 13.9 Acetaminophen 9.8 Acetaminophen 8.6
2 Ibuprofen 9.9 Acetaminophen 10.0 Nitrofurantoin 9.2 Nitrofurantoin 7.9
3 Hydrocodone 8.2 Nitrofurantoin 9.7 Metronidazole 8.0 Metronidazole 6.8
4 Amoxicillin 6.9 Promethazine 8.7 Ondansetron 7.8 Docusate 6.8
5 Metronidazole 5.1 Metronidazole 7.5 Amoxicillin 7.1 Amoxicillin 6.2
6 Azithromycin 4.9 Amoxicillin 7.3 Azithromycin 6.3 Azithromycin 5.7
7 Albuterol 4.2 Azithromycin 6.2 Docusate 5.9 Cephalexin 5.1
8 Fluconazole 3.7 Docusate 5.5 Cephalexin 4.9 Fluconazole 4.7
9 Sulfamethoxazole/Trimethoprim 3.3 Cephalexin 5.3 Albuterol 4.5 Ondansetron 4.6
10 Codeine 2.9 Hydrocodone 4.8 Promethazine 4.3 Terconazole 4.2
11 Naproxen 2.9 Metoclopramide 4.4 Fluconazole 3.4 Ranitidine 4.2
12 Oxycodone 2.9 Albuterol 4.2 Terconazole 3.4 Albuterol 4.0
13 Ciprofloxacin 2.7 Ibuprofen 3.7 Hydrocodone 3.4 Hydrocodone 3.0
14 Cephalexin 2.6 Fluconazole 2.8 Codeine 3.0 Codeine 2.9
15 Estradiol 0.1 Estradiol 0.1 Ranitidine 2.6 Valacyclovir 2.7

Colors (TERIS level of available evidence on teratogenic risk): None to Limited to Fair Fair to Good Good to Excellent