Nausea & Vomiting: UK Online Doctor Help
Educational information — not medical advice.
This article was prepared by the OnlineDoctor24 editorial team and reviewed for factual accuracy against UK clinical guidance (NHS and NICE). It is not written by a doctor and does not replace personal medical advice. For symptoms specific to you, book an online doctor consultation.
Key points
- Most acute vomiting is viral and short-lived.
- Hydration is the priority.
- Anti-sickness medication helps when symptoms persist.
- Pregnancy, migraine, medication side effects are common causes.
- Red flags: severe pain, blood, persistent vomiting, neurological symptoms.
Self-care
- Sip small amounts of fluid frequently.
- Avoid solid food initially; reintroduce gradually.
- Plain crackers, dry toast.
- Ginger or peppermint can help mild nausea.
- Avoid dehydration triggers (alcohol, caffeine).
Medication
- Cyclizine 50 mg — first-line for many causes.
- Promethazine — antihistamine option, useful in pregnancy.
- Ondansetron — strong antiemetic; prescription-only.
- Metoclopramide — short courses only (movement side effects).
Red flags — when to seek urgent help
Call 999 or go to A&E if you experience any of the following:
- Vomiting blood or coffee-ground
- Severe abdominal pain
- Stiff neck, severe headache
- Confusion or drowsiness
- Persistent vomiting > 48 hours
- Signs of dehydration
Frequently asked questions
Common questions UK patients ask about nausea and vomiting.
How an online doctor can help
Related articles
Acid Reflux & Heartburn: UK Online Doctor Guide
Heartburn, indigestion or sour taste? Learn UK treatment for acid reflux including PPIs (omeprazole, lansoprazole) via an online doctor.
IBS: UK Online Doctor Diagnosis & Treatment Guide
Bloating, cramps, diarrhoea or constipation? Learn how UK GPs diagnose IBS and how to manage it with diet, medication and online doctor support.
Constipation: UK Online Doctor Treatment Guide
Infrequent or hard stools? Learn UK treatment with diet, fluids, laxatives and prescription options via an online doctor.
This article is for general information only and does not replace personal medical advice from a qualified doctor. Content is reviewed against UK NHS and NICE guidance by the OnlineDoctor24 editorial team and is not authored by a medical doctor. If your symptoms worsen or you are unsure, please book a consultation with a GMC-registered GP.
See a UK GP about this today
Same-day video or phone consultations with GMC-registered GPs. Prescriptions, sick notes and referrals when clinically appropriate.