She needs same-day assessment by her obstetrician or an emergency department, especially since vomiting is continuing despite doxylamine-pyridoxine and Emeset (ondansetron). Hyperemesis can quickly cause dehydration, low potassium or other electrolyte problems, and weight loss. Severe, antiemetic-unresponsive vomiting is a common reason for hospital treatment in pregnancy.
Go to emergency care now if she has any of these:
- Cannot keep down fluids or her medicines
- Very little urine, dark urine, or no urination
- Dizziness, fainting, fast heartbeat, confusion, or severe weakness
- Vomiting blood, severe abdominal pain, fever, severe headache, or vaginal bleeding
- Noticeable weight loss
Do not keep adding or increasing medicines on your own. Doxylamine-pyridoxine and ondansetron can be appropriate options in pregnancy, but the right dose, timing, interactions, and next medicine must be decided by her obstetric clinician. She may need:
- IV fluids and blood tests for electrolytes and kidney/liver function
- Vitamins, particularly thiamine (vitamin B1) if prolonged vomiting or IV dextrose is being considered
- A clinician-selected additional or alternative anti-vomiting medicine
- Treatment for reflux or stomach irritation if contributing
- Admission if she remains unable to drink, is dehydrated, or is losing weight
Until she is seen, offer very small, frequent sips of oral rehydration solution, water, or ice chips only if she can tolerate them. Do not force food or large volumes at once.
ACOG advises that people with hyperemesis may need hospital care, IV fluids/vitamins, testing, and additional medication when vomiting cannot be controlled.
ACOG patient guidance
A recent systematic review of treatments is indexed as
PMID 37891710.