Clinical safety
Use your own team’s instructions first
Use the contact number and urgent-care advice your team gave you for new or worsening symptoms. If you are having systemic anti-cancer treatment, use the 24-hour number on your treatment alert card. Call 999 for a life-threatening emergency.
Track the pattern so treatment can be adjusted
The useful details are when sickness happens, what stays down, which prescribed medicines were taken and how daily function has changed.
A short sickness record
Bring this to the team rather than relying on memory after a difficult day.
- Time nausea starts, whether vomiting happens and any connection to treatment, meals, movement or smells.
- Names and times of prescribed anti-sickness medicines and whether they stayed down.
- Drinks, food and oral medicines you could or could not keep down.
- Urine changes, dizziness, dry mouth, weakness or other signs that concern you.
- Constipation, pain, headache, fever or neurological symptoms that may change the assessment.
- The point at which your own team told you to call rather than continue at home.
Questions when the current plan is not working
There are different anti-sickness options and routes, but the prescriber must tailor them.
- Should the medicine be taken regularly, before a trigger or only when needed?
- What should I do if I vomit soon after taking it or cannot swallow it?
- Could constipation, pain medicine or another medicine be contributing?
- Would a different route or combination be appropriate?
- When do I need fluids, blood tests or assessment rather than another prescription?
Report impact, not only a score
Concrete information helps the team act.
“I have vomited four times since this morning, cannot keep my prescribed medicines down and have passed very little urine. The anti-sickness plan is not controlling it.”
Control symptoms early enough to protect fluids, food and medicines
Nausea and vomiting can come from treatment, medicines, constipation, pain, infection, metabolic changes, anxiety or the cancer itself. A pattern-based account helps the team adjust support and identify when another cause needs investigation.
Anti-sickness medicines work in different ways and may be prescribed regularly, before a trigger or as an additional rescue option. Follow the exact timetable, including preventive doses when instructed. If tablets are vomited, do not automatically repeat them. Contact the treatment team or pharmacist for medicine-specific advice, since the safe response depends on timing and formulation.
Record when nausea begins in relation to treatment, meals and medicines, how often vomiting occurs, whether fluids and essential medicines stay down, and changes in urine, bowels, pain, headache or balance. This distinguishes a manageable symptom from dehydration, obstruction, infection or a neurological problem. Constipation caused by pain relief or anti-sickness medicine can itself worsen nausea and deserves mention.
Small sips and small, tolerable portions can be easier than full meals, but nutrition advice should fit swallowing, diabetes, kidney, heart and bowel problems. Avoid making food a contest. Prioritise the fluid and medicine plan the clinical team gives, and ask a dietitian when symptoms persist. Strong smells, heat and fatigue may be practical triggers worth changing while medical support is reviewed.
A practical way through it
Use the parts that fit your situation and leave the rest.
- Use the prescribed scheduleWrite each anti-sickness medicine, dose, timing and purpose on one chart, including the maximum use of any as-needed medicine.
- Record a 24-hour patternNote vomiting episodes, approximate fluid, urine, meals, bowel movement, pain, headache and whether essential medicines stayed down.
- Act before dehydrationContact the treatment team when intake is falling, urine is reduced or dark, dizziness develops, weight drops or medicines cannot be kept down.
- Reduce avoidable triggersTry cooler foods, ventilation, small portions and help with cooking if smells or fatigue worsen nausea, while following any prescribed diet or food-safety rules.
- Check connected causesTell the team about constipation, abdominal swelling, feverishness, severe pain, new headache, confusion or balance change rather than asking only for a stronger anti-sickness drug.
- Ask before repeating a doseIf vomiting follows a medicine or oral cancer treatment, call for exact advice and never double the next dose to compensate.
What this can look like
When tablets will not stay down
After repeated vomiting, Kai cannot keep anti-sickness tablets, pain medicine or more than a few sips of water down and has passed very little urine.
A useful response
Call the 24-hour treatment service promptly with the vomiting count, intake, urine and missed medicines.
Do not keep repeating vomited doses unless the prescriber gives exact instructions.
Follow the assessment plan, and call 999 for collapse, severe confusion, vomit containing significant blood or another immediate emergency.
Everyday management
- Take anti-sickness medicine exactly as prescribed, including preventive doses.
- Try manageable drinks and foods if tolerated without forcing food.
Tell the team early
- Call if prescribed medicine is not working or fluids and essential medicines will not stay down.
- Record timing, triggers and doses taken.
When it is urgent
- Report reduced urine, dizziness, worsening weakness, blood in vomit or severe abdominal pain.
- Fever, confusion or vomiting with severe headache or neurological change needs urgent assessment.
A manageable next step
What you could do now
- Follow the written anti-sickness schedule.
- Track drinks, urine and vomiting if symptoms continue.
- Use the treatment number before dehydration becomes severe.
Checked sources
Read the original guidance
We summarise carefully and link to the source so you can check the full, most current information. Sources were checked 9 September 2026.