Each person's reaction to chemotherapy is different. Some people have very few side effects, while others may experience more. The side effects described below will not affect everyone who is having this treatment. We have outlined the most common side effects, so that you can be aware of them if they occur. However, we have not included those that are rare and therefore unlikely to affect you. If you notice any effects that you think may be due to the drug, but which are not listed here, please let your nurse or doctor know.
Feeling sick (nausea) and being sick (vomiting) Your doctor can prescribe very effective anti-sickness drugs to prevent or reduce nausea and vomiting. If the sickness is not controlled, or if it continues, tell your doctor. They can prescribe other anti-sickness drugs that may be more effective. Some anti-sickness drugs may cause constipation. Let your doctor or nurse know if this is a problem.
Lowered resistance to infection Cisplatin and 5FU chemotherapy can reduce the production of white blood cells by the bone marrow, making you more prone to infection. This effect can begin seven days after treatment has been given, with your resistance to infection usually reaching its lowest point 10–14 days after chemotherapy. Your blood cells will then increase steadily, and will usually have returned to normal before your next course of chemotherapy is due.
You will have a blood test before having more chemotherapy to make sure that your number of white blood cells has returned to normal. Occasionally, it may be necessary to delay treatment if your number of blood cells (blood count) is still low.
Contact your doctor, or the hospital, straightaway if:
- your temperature goes above 38ºC (100.5ºF)
- you suddenly feel unwell (even with a normal temperature).
Bruising or bleeding Cisplatin and 5FU chemotherapy can reduce the production of platelets (which help the blood to clot). Let your doctor know if you have any unexplained bruising or bleeding, such as nosebleeds, blood spots or rashes on the skin, or bleeding gums.
Anaemia (low number of red blood cells) While having this treatment you may become anaemic. This can make you feel tired and breathless.
Sore mouth Your mouth may become sore or you may notice small ulcers during this treatment. Drinking plenty of fluids and cleaning your teeth regularly and gently with a soft toothbrush can also help. Tell your doctor if you have any of these problems, as special mouthwashes and medicines to help prevent or clear any mouth infection can be prescribed.
Constipation This may occur, but can usually be relieved by drinking plenty of fluids, eating a high-fibre diet and taking gentle exercise. Sometimes you may need to take medicines to stimulate your bowel. Your doctor can give you these or you can buy them at a pharmacy.
Diarrhoea This can usually be easily controlled with medicine, but tell your doctor if it is severe or if it continues. It is important to drink plenty of liquids (2–3 litres a day) if you have diarrhoea.
Numbness or tingling in hands or feet (peripheral neuropathy) This is due to the effect of cisplatin on nerves. Tell your doctor if you notice these symptoms. The problem usually improves slowly, a few months after treatment is over.
Tiredness Many people feel extremely tired during chemotherapy, particularly towards the end of treatment. This is a very common side effect and it is important to try to get as much rest as you need.
Gritty eyes and blurred vision If this happens it is important to tell your doctor, who can give you soothing eye drops.