The short answer
Cancer treatments can affect the body in different ways, and it helps to know ahead of time what side effects are possible, which ones need a call to your care team right away, and how they can be prevented or managed. Useful questions cover short-term and long-term effects, fertility, appetite, and your other medicines and supplements. Bring the ones that fit your treatment.
Ask what side effects are possible with your specific treatment, both during and between sessions.
Ask which side effects mean you should call your care team right away.
Ask whether any side effects could be lasting or long-term, including effects on fertility.
Ask how side effects can be prevented or treated, not just what to expect.
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The full explanation.
Why these questions matter
Side effects vary a lot depending on the treatment, the dose, and the person. Asking about them ahead of time — not just what might happen, but what needs immediate attention and what can be managed — helps you feel more prepared and less caught off guard.
These prompts are adapted from questions the National Cancer Institute suggests asking about treatment side effects.
The essentials
- What are the possible side effects of this treatment?
- Which side effects might happen during or between sessions?
- Are there any side effects I should call you about right away?
That last question is worth writing down separately. Knowing which symptoms count as urgent — before you're dealing with one — can save time when it matters.
About your body
- Are there any lasting or long-term side effects?
- Will this treatment affect my ability to have children?
- Will it affect my appetite or make it hard to eat?
About managing side effects
- How can side effects be prevented or treated?
- Should I tell you about all the medicines and supplements I take?
Mention everything — prescription medicines, over-the-counter drugs, vitamins, minerals, herbs, and fish oil. Some of these can change the way cancer treatment works, even if they seem unrelated.
Make it yours
Side effects can affect work, caregiving, and daily routines differently for everyone. It can help to ask:
- Whether side effects tend to build up over multiple sessions or stay about the same.
- Whether there are things you can do ahead of time — like adjusting diet or activity — that might help.
- Who to call, and how, if a side effect comes up outside of office hours.
Keep a simple log of what you notice after each session. It can help your care team spot patterns and adjust your plan if needed.
The takeaway
Side effects are one of the most unpredictable parts of cancer treatment, but the uncertainty is easier to manage with a plan. Ask what to expect, what needs an urgent call, what might last, and how to manage what comes up — then keep the conversation going as treatment continues.
Words to know
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Common questions
▸Why does it matter which side effects I should call about right away?
Knowing that one answer ahead of time can help you act quickly if something serious comes up, instead of trying to decide in the moment whether a symptom is an emergency.
▸Should I mention over-the-counter supplements, or just prescription medicines?
Both. The National Cancer Institute notes that some medicines and supplements — including vitamins, minerals, and herbal products — can change how cancer treatment works, so it's worth mentioning everything you take.
▸What if new side effects show up after treatment ends?
It's worth asking your care team ahead of time which effects can appear later, so you know what to watch for and who to contact if something new comes up after your last session.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
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Your next step
Pick the questions that fit your situation, then print or save them.
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