Acetaminophen (also known as paracetamol or Tylenol) has long been considered the safest pain reliever for pregnant people. Now, a comprehensive meta-analysis from Mount Sinai in New York suggests the picture may be more nuanced than previously thought.
High Use Linked to Increased Risk
Researchers at the Icahn School of Medicine analyzed results from a number of high-quality studies. Their conclusion is that pregnant people who use a lot of acetaminophen — especially over extended periods — have a statistically increased risk of the child developing ADHD or autism spectrum disorder.
The possible mechanisms include oxidative stress and disruption of hormonal signaling in fetal development. The researchers emphasize that it is about quantity and duration — occasional use when needed appears to be far less problematic than daily use over weeks.
The study recommends that pregnant people discuss pain management with their doctor and consider non-medication alternatives where possible — such as rest, heat packs, or physical therapy.
No Reason for Panic
It is important to clarify that this is an observational study showing an association, not causation. Many people who use a lot of acetaminophen do so because they have pain conditions that may themselves affect pregnancy. The researchers are clear that pregnant people should not stop necessary pain relief without first speaking to their doctor.
What the Guidelines Say
The FDA, AAP, and most international health authorities still recommend acetaminophen as the first-choice pain reliever for fever and pain during pregnancy, but at the lowest effective dose and for the shortest time necessary. NSAIDs such as ibuprofen are generally discouraged during pregnancy, especially after week 20. If you are unsure about medication use during pregnancy, always consult your OB-GYN or midwife.
You can read more about staying healthy during pregnancy in our pregnancy health guide.
Frequently Asked Questions
Is acetaminophen still safe to take during pregnancy?
Yes. Health authorities including the FDA and AAP still recommend acetaminophen as the first-choice option for fever and pain during pregnancy. The study concerns high use over extended periods. Occasional use when needed — at the lowest effective dose and for the shortest time necessary — is still considered safe. Never stop necessary pain relief without speaking to your doctor.
What are the alternatives to acetaminophen during pregnancy?
Non-medication alternatives such as rest, heat packs, physical therapy, and relaxation exercises can be good options for mild to moderate pain. NSAIDs such as ibuprofen are generally discouraged during pregnancy, especially after week 20. Always speak with your doctor or midwife if you are experiencing persistent pain and need help managing it.
Does this study mean my child will develop ADHD or autism?
No. The study shows a statistical association, not a direct causal link. Most children exposed to acetaminophen during pregnancy develop entirely normally. Many people who use a lot of acetaminophen have pain conditions that may themselves affect the pregnancy. The researchers are clear that this is not a reason for panic.
What should I do if I have used a lot of acetaminophen during pregnancy?
Do not worry unnecessarily. The vast majority of children develop normally regardless of the mother's medication use. Pediatricians and child health providers routinely monitor all children's development — including motor skills, language, and social development — at regular well-child visits. Talk to your doctor if you are concerned, and bring it up at your next prenatal appointment.
Sources
- Bauer, A.Z. et al. (2021). "Paracetamol use during pregnancy — a call for precautionary action." Nature Reviews Endocrinology.
- FDA – Acetaminophen and Pregnancy
- AAP – Medication Safety During Pregnancy