Keeping an oral chemotherapy diary

Because it is the simplest way to take tablets safely and to give your team the information they need. When treatment happens at home, nobody else sees each dose. A diary records what you actually took, when, and how you felt. It prevents the common and risky situation of not knowing whether you already took a dose. It shows patterns, such as diarrhoea that starts a few days into each cycle or sore hands that get worse over several weeks. And at each review, it lets your oncologist see missed doses, side effects and other medicines at a glance, rather than relying on memory.

A diary does not need to be complicated. A notebook, a printed chart from your hospital, a calendar on the wall or a note on your phone all work, as long as you use it every day. The most important habit is to record each dose straight after taking it, not at the end of the day. Many people also note side effects each evening, rating how bad they are, and write down anything unusual, such as vomiting after a dose, a missed dose, a change of medicine, a fever or a visit to a doctor. Bring the diary to every appointment and blood test. Family members can help keep it if you are tired or unwell. Keeping it private from children, but visible to the person who helps with your treatment, is a sensible balance.

Record doses immediately

Tick or write each dose as soon as it is taken, so there is never doubt later.

Side effects in simple words

Note what happened, when it started and how much it affected daily life.

Include other medicines

List anti-sickness tablets, painkillers and any new medicines or supplements.

It cannot tell you your dose or schedule. Your diary should reflect the instructions your team has given, and if anything changes, update it and ask for new written guidance.

It also cannot interpret the side effects you record. Your diary helps your team decide what to do, but serious symptoms need a call, not just an entry.

Paper or phone

Use whichever you will keep up. Paper is easy to share; phones are always with you.

Family help

A carer can fill in the diary if you are tired, but should confirm each dose with you.

Privacy

Keep the diary somewhere safe, especially if it includes personal details.

Photos of results

Add photos or notes of blood test results alongside diary entries.

Languages

Write in the language you are most comfortable with. Clarity matters more than format.

Rest days

Mark off days clearly so you do not take tablets on the wrong days.

Refill reminders

Note when tablets are running low and when refills are due.

Children on oral treatment

Parents can use the diary to coordinate doses between carers.

Keep old diaries

Previous cycles help your team see long-term patterns.

A simple format that works

A practical diary page might have one row for each day, with columns for the date, the time of each dose, the number of tablets taken, a tick box, and space for side effects and notes. Rest days can be shaded so they stand out. At the bottom of each week, add a line for questions to ask. Some people prefer a wall calendar with stickers for each dose and a separate notebook for side effects. The best format is the one you will actually use every day, so choose something simple and keep it next to your tablets.

Rating side effects consistently

Using the same simple scale each day, such as none, mild, moderate or severe, helps you and your team see whether a side effect is getting better or worse. For diarrhoea, noting the number of loose stools each day is especially useful. For hand and foot soreness, noting whether it affects walking or daily tasks gives a clear picture.

How a diary helps your team make decisions

When your oncologist reviews you, they need to know whether side effects are caused by the medicine, how severe they have been, and whether the treatment has actually been taken as planned. Without a diary, people often forget details or underestimate problems once they are feeling better on the day of the appointment. A diary showing, for example, that diarrhoea started a few days into each cycle and settled during rest days, or that two doses were missed after a family function, gives your team a much clearer picture. This can lead to more accurate dose adjustments, better supportive treatment and fewer unnecessary delays.

Sharing the diary between visits

If your team offers phone reviews, keep the diary beside you during the call so you can read out doses, missed tablets and side effects accurately, rather than relying on memory.

What to do next

Start a diary before your first dose, record each dose straight after taking it, note side effects and other medicines each day, mark rest days and refills, bring the diary to every appointment, and call your team rather than just writing down serious symptoms.