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Perinatal prescribing rose thirtyfold. The safety data did not.

GLP-1 prescriptions around delivery went from 0.2 to 14.6 per 1,000 in five years. The study counts prescriptions and reports no outcomes at all.

Wesley Jenkins6 min read
Prescriptions per 1,000 deliveries2019 → 2024year before delivery0.26.4year after delivery0.314.614.6 per 1,000 is about 1.5% of deliveries.

Prescribing data answers a question that marketing copy never will, which is what is actually happening rather than what a seller says should happen. A retrospective cohort tracked semaglutide and tirzepatide prescriptions in the year either side of delivery across the United States from 2019 to 2024 [1]. It belongs beside the access picture in who the price filtered out, which tracks the same expansion from a different angle.

In the year before delivery, prescribing went from 0.2 to 6.4 per 1,000 deliveries. In the year after, from 0.3 to 14.6 per 1,000, which is about one and a half percent of all deliveries. Segmented regression with change-point detection placed the acceleration at June 2022 for the predelivery window and March 2021 for the postdelivery one.

One measurement detail changes what the predelivery number means. The window is the whole year before delivery, which includes months before anyone knew a pregnancy existed. A prescription filled in that period is not evidence of a clinician knowingly prescribing to a pregnant patient, and part of the rise simply reflects more people of reproductive age taking these drugs at all. The postdelivery figure has no such ambiguity, and it is the larger of the two.

For anyone buying through a telehealth seller, the practical question is what the intake form asks and what it does with the answer. Pregnancy screening is one of the places where the thoroughness of an intake varies most between sellers, and this desk has found wide variation in what sellers disclose and verify generally — the pattern is set out in sellers publishing two different prices and in what the secret-shopper study found. A drug whose perinatal safety data is explicitly described as insufficient by the people counting the prescriptions is one where that screening matters more than usual, and anyone pregnant, nursing or planning a pregnancy needs an obstetrician in the conversation rather than a web form. What coverage has to do with any of it is a separate question handled in what insurance coverage costs.

Frequently asked

Is it unsafe to take a GLP-1 while pregnant?
This study does not answer that. It counts prescriptions and reports no pregnancy outcomes. Its authors describe the perinatal safety evidence as insufficient and call for more of it.
Does the predelivery figure mean doctors prescribed to pregnant patients?
Not necessarily. The window is the full year before delivery, which includes time before a pregnancy was known, so part of the rise reflects more people of reproductive age using these drugs generally.
How common is it now?
In the year after delivery, 14.6 prescriptions per 1,000 deliveries, which is roughly 1.5% — up from 0.3 per 1,000 in 2019.

Sources

  1. [1] Lessard C, Cary C, In A, Steinle J, et al. (2026). Prescribing Trends in Glucagon-Like Peptide-1 Medications Among Pregnant and Postpartum Persons Obstetrics and Gynecology. PMID 41505759

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