Is Fexofenadine Safe in Pregnancy

Status

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

Reason

Limited pregnancy data. Use only if benefits outweigh risks; preferred options have more pregnancy data.

Drug Information

Brand Name
Allegra
Generic Name
fexofenadine
Drug Class
Second-generation antihistamine
FDA Category
C
Rx Status
OTC

Safe Amount

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

Effects

Pregnancy
No adequate, well-controlled studies in pregnant people. Use only when needed and after provider review.
Mother
May relieve allergy symptoms. Can cause headache, nausea, dizziness, or drowsiness in some people.
Baby
Animal data showed reduced pup weight and survival. Human data are limited; no clear signal of major birth defects in available reports.

Trimester Notes

1st Trimester
Human pregnancy data are limited. First-trimester use should be reviewed with your provider.
2nd Trimester
Use only if needed and after provider review; more-studied antihistamines are often preferred.
3rd Trimester
No special trimester dose is listed in official labeling. Use only if your provider says the benefit outweighs the risk.

Conditions & Warnings

  • Consult OB/GYN or prescriber
  • Pregnancy allergy symptoms
  • OTC pregnancy dosing limits may apply

Alternatives

  • chlorpheniramine
  • loratadine
  • cetirizine

References

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