Side effects
The medicines
Imatinib (Glivec, Gleevec): targeted therapy, tablets. Take with food and a glass of water. Puffy eyes are common and harmless.Tap the side effect you have on the map to see how severe it is and what to do. Not everyone gets every side effect, and most are mild.
Fever and infection
From: Imatinib
37.5 to 37.9°C: check again in 1 hour
Call or WhatsApp us today
38°C or more, or shivering
Go to emergency now
37.5 to 37.9°C: check again in 1 hour
Slightly raised temperature
A slightly raised temperature, otherwise well.
Call or message the duty mobile today. Drink fluids and check again after 1 hour. If it rises to 38°C at any time, go to the emergency department.
38°C or more, or shivering
Fever: always an emergency during chemotherapy
A temperature of 38.0°C (100.4°F) or more, even once. Or shivering, chills, or feeling suddenly very unwell.
Go to the emergency department now. Tell them you are on chemotherapy. Antibiotics are needed within an hour. If you cannot reach KIMS quickly, go to the nearest hospital emergency.
What helps at home
Keep a thermometer at home. Check your temperature whenever you feel unwell, hot, cold or shivery. Do not take paracetamol before checking: it can hide a fever. Wash hands often; avoid crowds and people with colds, cough or chickenpox. Eat freshly cooked food; avoid raw salads, cut fruit and street food when counts are low. Brush gently, keep cuts clean, and do not squeeze pimples.
Medicines we use
Growth factor injections (G-CSF) may be given after chemotherapy to raise white cells.Antibiotics are given by us when needed. Do not start antibiotics from home without telling us.
Nausea and vomiting
From: Imatinib
Feeling sick, eating a little less
Manage at home
Vomiting 1 to 3 times a day
Call or WhatsApp us today
Vomiting more than 3 times, or can't keep fluids down
Go to emergency now
Feeling sick, eating a little less
Mild (grade 1)
Feeling sick and eating a little less than usual, no vomiting.
Manage at home. Take your anti-sickness tablets and eat small meals.
Vomiting 1 to 3 times a day
Moderate (grade 2)
Eating much less than usual, or vomiting 1 to 3 times in a day.
Call or message the duty mobile today. We may add or change your medicines.
Vomiting more than 3 times, or can't keep fluids down
Severe (grade 3 or 4)
Vomiting more than 3 times in 24 hours , or cannot keep down water or medicines, or feeling dizzy.
Go to the emergency department now. You may need fluids through a drip. If you cannot reach KIMS quickly, go to the nearest hospital emergency.
What helps at home
Take your anti-sickness tablets on time for the days advised, even if you feel well. Eat small, plain meals often: idli, toast, rice, biscuits. Avoid oily, spicy food and strong smells. Sip fluids through the day: water, ORS, lemon water, coconut water. Ginger tea or lemon may help. Sit up for 30 minutes after eating.
Medicines we use
Ondansetron or granisetron, aprepitant, dexamethasone, olanzapine and metoclopramide. If you still feel sick, tell us: the medicines can be changed or added for the next cycle.
Loose stools (diarrhoea)
From: Imatinib
1 loose stool more than usual
Manage at home
2 to 3 loose stools a day
Call or WhatsApp us today
4 or more loose stools, or blood, fever or dizziness
Go to emergency now
1 loose stool more than usual
Mild (grade 1)
1 loose stool more than usual in a day, otherwise well.
Manage at home. Drink plenty and eat soft food. Start loperamide if advised.
2 to 3 loose stools a day
Moderate (grade 2)
2 to 3 loose stools in a day, or tummy cramps.
Call or message the duty mobile today. We will tell you about loperamide and fluids. On immunotherapy, this needs a call today.
4 or more loose stools, or blood, fever or dizziness
Severe (grade 3 or 4)
4 or more loose stools in 24 hours , or any loose stools with blood, fever, or dizziness.
Go to the emergency department now. You may need fluids through a drip and tests. If you cannot reach KIMS quickly, go to the nearest hospital emergency.
What helps at home
Drink plenty: ORS, buttermilk, rice water, coconut water, clear soups. Eat soft, low-fibre food: curd rice, idli, khichdi, banana, toast. Avoid milk, oily and spicy food, raw salads and fruit juices until better. Keep the skin around the bottom clean and dry.
Medicines we use
Loperamide, as advised by your doctor. Do not take it if you have fever or blood in the stools, without asking us. On immunotherapy, loose stools may need steroids: always tell us.
Skin and nail changes
From: Imatinib
Dry skin or mild rash
Manage at home
Painful peeling, or rash over a large area
Call or WhatsApp us today
Blisters, skin peeling off, or rash with fever
Go to emergency now
Dry skin or mild rash
Mild (grade 1)
Dry skin, mild rash or redness, without pain.
Manage at home. Moisturiser and sunscreen.
Painful peeling, or rash over a large area
Moderate (grade 2)
Painful redness or peeling of the hands or feet, or a rash over a large area, that affects daily work.
Call or message the duty mobile today. A cream, tablet or a short break in treatment can help.
Blisters, skin peeling off, or rash with fever
Severe (grade 3 or 4)
Blisters , skin peeling off, a rash with fever, a rash in the mouth or eyes, or a red, hot, swollen area with pus.
Go to the emergency department now. If you cannot reach KIMS quickly, go to the nearest hospital emergency.
What helps at home
Moisturise twice a day with a fragrance-free cream; urea cream for hands and feet. Use sunscreen and cover up in the sun. Bathe with lukewarm water and mild soap. Avoid tight shoes, hot water and long walks if hands and feet are sore. Keep nails short; wear gloves for housework.
Medicines we use
Antibiotic tablets and creams for EGFR rash; steroid creams; a short break or dose change for sore hands and feet.
Swelling of legs or puffiness
From: Imatinib
Fluid can collect in the legs, around the eyes or in the body.
When: After several weeks.
What helps:
Raise your legs when sitting; avoid extra salt. Steroid tablets or water tablets if needed. Call or message the duty mobile if you become breathless or gain weight quickly.
Muscle cramps
From: Imatinib
Muscle cramps are common.
When: Over weeks.
What helps:
Stretching, fluids; tell us if severe.
Check your symptoms in My treatment
General information. Doses are not shown. Your own doctor may advise differently. When to seek help urgently
Written and medically reviewed by Dr Prathyusha Eaga, MD, DM (Medical Oncology). Last reviewed: 12 October 2026. Based on NCCN and ESMO guidelines.
Have questions?
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