Anti-vomiting medicine: what to know

Anti-vomiting medicines act on signals between the gut and brain, but different products suit different situations. Vomiting may occur with gastroenteritis, food poisoning, migraine, gallstones, pancreatitis, or rotavirus infection. Treating the symptom can help someone keep fluids down, yet it does not remove every underlying cause. [Vomiting](/symptoms/vomiting/) may need assessment when the pattern is unusual or severe.

Ask a pharmacist or clinician before using a product, especially for a child, during pregnancy, or alongside regular medicines. Take small frequent sips of fluid; oral rehydration solution may be useful when fluid loss is substantial. Rest, avoid rich or greasy food at first, and return to light meals as tolerated. Follow the prescribed dose and do not combine anti-vomiting products without advice.

Seek urgent care if you cannot keep fluids down, vomit blood or material that looks like coffee grounds, have severe or worsening abdominal pain, a stiff neck, confusion, fainting, severe headache, or signs of dehydration such as very little urine. Babies, older adults, and people with significant long-term illness need a lower threshold for medical review.

Ask what may be causing the vomiting, whether you need an examination, which medicine is appropriate, and how to manage missed regular medicines. Ask how long vomiting can be watched at home and which changes require same-day care.