Your full medication list and interactions
During leukaemia treatment, a complete list of all your medicines is one of the simplest and most important safety tools.

01Short answer
02Simple explanation
Write everything down. Tablets, drops, herbs, supplements.
Carry the list. To every visit.
Have it checked. Pharmacist and haematologist.
Update it. After every change.
03Scientific explanation
Enzymes: many medicines are broken down in the liver by the same enzymes (for example CYP3A4), so one can change the level of another.
Heart rhythm: some medicines together can affect heart rhythm (the QT interval).
Clotting: blood thinners combined with low platelets can raise bleeding risk.
04What happens in the body?
One list
All medicines and supplements belong in one place.
A shared pathway
When two medicines use the same route, they can affect each other.

Pharmacist review
A pharmacist can check your list for interactions.

05Working with your list
Four steps.




06What goes on the list
| Group | Examples | Why it matters |
|---|---|---|
| Prescription | Heart, blood pressure, diabetes medicines | Interactions and adjustment |
| Non-prescription | Painkillers, stomach remedies | Some affect bleeding or absorption |
| Herbs and supplements | Teas, vitamins, extracts | Some change medicine levels |
07Key terms
- Interaction
- One medicine affecting another.
- Over-the-counter
- Sold without a prescription.
- Medication review
- Going through your list with a professional.
- Grapefruit
- A fruit that can change some medicine levels.
08Key points
- Keep the list in writing.
- Include herbs and supplements.
- Bring it to every visit.
- Ask before any new medicine.
- Ask about grapefruit.
- Update it after changes.
09Frequently asked questions
Can I buy a painkiller?
Some are unsuitable when platelets are low; ask your team first.
Are vitamins harmless?
Not always; some can affect treatment.
Should every doctor see the list?
Yes, including your dentist.
10Questions for your doctor
Take these questions to your appointment. The ones you save are collected on the “My questions” page and stay on this device only.
Can I buy a painkiller?
Are vitamins harmless?
Should every doctor see the list?
12Sources
- U.S. Food and Drug Administration (FDA). Drug Interactions: What You Should Know
- MedlinePlus. Herbal Medicine
- MedlinePlus. Dietary Supplements
- National Cancer Institute (NCI). Side Effects of Cancer Treatment
- MedlinePlus. Dexamethasone
- NHS. Steroids
- MedlinePlus. Venetoclax
- MedlinePlus. Platelet Disorders
- MedlinePlus. Aciclovir (acyclovir)
- NHS. Shingles