No, you should not take rizatriptan during pregnancy for migraines
Rizatriptan is classified as FDA Pregnancy Category C and should not be used during pregnancy unless the potential benefit clearly justifies the potential risk to the fetus 1. The most recent 2025 American College of Physicians guidelines explicitly state their recommendations apply only to "nonpregnant and nonlactating adults" and emphasize that providers must "discuss the adverse effects of pharmacologic treatments during pregnancy and lactation" with people of childbearing potential 2.
Why Rizatriptan Is Not Recommended in Pregnancy
Safety Concerns from Animal Studies
The FDA label reveals concerning findings from animal studies 1:
- Increased offspring mortality at birth and during the first three days of life
- Decreased learning capacity in offspring (demonstrated by passive avoidance testing)
- Persistent weight deficits in offspring that continued into adulthood
- Neural tube development concerns: Recent research in chick embryos showed rizatriptan significantly slowed neural tube development, with neural tube closure defects observed at higher doses 3
Limited Human Data
While post-marketing surveillance of 25 prospective pregnancies did not suggest increased risk of spontaneous abortions or congenital anomalies 4, this sample size is far too small to draw meaningful safety conclusions. The lack of adequate human data is precisely why the drug remains Category C.
What You Should Use Instead
First-Line Treatment During Pregnancy
Start with acetaminophen (paracetamol) 1000 mg, preferably as a suppository 5. This is considered the safest first-choice option.
Second-Line Options
If acetaminophen fails:
- NSAIDs (ibuprofen, aspirin) during first and second trimesters only - avoid completely in the third trimester due to risks of premature ductus arteriosus closure 5, 6
- Metoclopramide for nausea (acceptable in second and third trimesters) 5
- Prochlorperazine for nausea (unlikely to be harmful) 5
Hospital-Based Treatment
If presenting to acute care 7:
- Metoclopramide IV (used in 74% of pregnant patients with migraine)
- IV magnesium (24% usage rate)
- IV fluid bolus (38% usage rate)
- Peripheral nerve blocks (underutilized but potentially safe option)
Critical Pitfalls to Avoid
Do not use opioids or butalbital - despite being used in 30-35% of pregnant migraine patients in one study 7, these are less effective for migraine and carry their own fetal risks. The 2025 ACP guidelines explicitly state "do not use opioids or butalbital for the treatment of acute episodic migraine" 2.
Avoid all triptans during pregnancy - the older literature consistently contraindicated triptans in pregnancy 5, and while some recent research suggested possible safety for sumatriptan specifically 8, 6, rizatriptan has insufficient human data and concerning animal data.
Prevention During Pregnancy
If you need preventive therapy: