Is Pepcid Ac Safe During Pregnancy

Status

caution Last reviewed: 2026-05-16 · Confidence: moderate

Reason

Pregnancy data are limited but available official labeling does not show a clear fetal risk; use only if needed and review with your prescriber.

Drug Information

Brand Name
Pepcid AC
Generic Name
famotidine
Drug Class
H2 receptor antagonist
FDA Category
B
Rx Status
OTC

Safe Amount

Dosage must be determined by your provider based on individual risk/benefit.

Effects

Pregnancy
Use only if needed. Pregnancy treatment should start with lifestyle changes and antacids; pregnancy dosing limits may apply.
Mother
May help heartburn or reflux. Side effects can include headache, dizziness, constipation, or diarrhea.
Baby
Famotidine crosses the placenta. No clear increase in birth defects has been shown in available data, but data are limited.

Trimester Notes

1st Trimester
Available data do not show a clear increase in congenital malformations, but human data are limited.
2nd Trimester
No trimester-specific official warning; use only if needed after non-drug options.
3rd Trimester
No special trimester warning in official labeling, but use the lowest needed amount only if your prescriber says it is needed.

Conditions & Warnings

  • Consult OB/GYN or prescriber
  • OTC pregnancy dosing limits may apply
  • Use only if symptoms are not controlled with lifestyle measures or antacids

Alternatives

  • Lifestyle changes for reflux
  • Antacids such as calcium carbonate if approved by your clinician
  • Other treatment options your OB/GYN or prescriber may recommend

References

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