Complementary Therapies During Chemotherapy
Some complementary therapies are safe and beneficial during chemotherapy; others carry significant risks. Dr Saskia Kloppenburg Vieth, an integrative oncology physician, explains which therapies have evidence, which are contraindicated, and how to access safe, medically supervised guidance.
Safety First: Drug-Herb Interactions
The most important consideration when using complementary therapies during chemotherapy is safety. Some herbal supplements and high-dose nutritional supplements can interfere with the metabolism of chemotherapy drugs, potentially reducing their efficacy or increasing their toxicity.
The mechanism is primarily through CYP450 liver enzyme interactions. St John's Wort, for example, is a potent CYP3A4 inducer that can significantly reduce the plasma concentration of many chemotherapy agents. High-dose antioxidants during chemotherapy remain controversial. A drug-herb interaction review is a core part of every integrative oncology consultation with Dr Kloppenburg.
Safety and Evidence Summary
| Therapy | Primary use | Safety | Evidence |
|---|---|---|---|
| Acupuncture | Nausea, pain, fatigue | Generally safe | Multiple systematic reviews; included in oncology guidelines |
| Hypnotherapy & NLP | Anxiety, anticipatory nausea, pain | Safe; no drug interactions | NICE-recognised; RCT evidence for anticipatory nausea |
| Mistletoe Therapy | Quality of life, immune function | Safe when prescribed by physician | Over 100 clinical studies; Cochrane review |
| Nutritional Therapy | Fatigue, immune support, treatment tolerance | Safe with personalised guidance | WCRF/AICR guidelines; strong evidence base |
| IV Vitamin C | Quality of life, fatigue | Timing relative to chemo must be assessed | Phase I/II trials; NCI PDQ summary |
| St John's Wort | NOT recommended during chemotherapy | CONTRAINDICATED | CYP3A4 inducer — reduces plasma concentration of many chemotherapy agents |
How Dr Kloppenburg Approaches Chemotherapy Support
In every consultation with a patient undergoing chemotherapy, Dr Kloppenburg reviews their full medication list, their specific chemotherapy regimen, and any complementary therapies they are already using. She then provides a written assessment of which therapies are safe, which should be avoided, and which may be beneficial — with evidence references and clear clinical reasoning.
She communicates with the patient's oncologist on request, providing a written report that can be shared with the conventional treatment team. This collaborative approach ensures that integrative oncology adds to — and does not undermine — the patient's conventional treatment. Learn more about her approach on the integrative oncology services page.
Frequently asked questions
Questions About Complementary Therapies During Chemotherapy
Are complementary therapies safe during chemotherapy?
Safety depends on the specific therapy and the patient's treatment protocol. Acupuncture, mind-body therapies, and certain nutritional interventions are generally safe. Some herbal supplements can interfere with chemotherapy metabolism and are contraindicated. Always consult a qualified integrative oncology physician before using any complementary therapy during chemotherapy.
What complementary therapies help with chemotherapy side effects?
Evidence-informed therapies for chemotherapy side effects include acupuncture (for nausea and pain), hypnotherapy (for anxiety and anticipatory nausea), nutritional therapy (for fatigue and immune support), and mistletoe therapy (for quality of life and immune function). Each must be assessed individually for safety.
Can herbal supplements interfere with chemotherapy?
Yes. Some herbal supplements affect the metabolism of chemotherapy drugs by interacting with liver enzymes (particularly CYP450 enzymes). St John's Wort is the most well-known example. A drug-herb interaction review is a core part of every integrative oncology consultation with Dr Kloppenburg.
Do I need to tell my oncologist about complementary therapies?
Yes — always. Your oncologist needs to know about all supplements and complementary therapies you are using to ensure they do not interfere with your treatment. Dr Kloppenburg communicates with your oncologist or GP as part of your care coordination, and provides a written report on request.
Get Safe, Evidence-Based Guidance
Book a 60-minute remote integrative oncology consultation with Dr Kloppenburg to discuss which complementary therapies are safe and appropriate for your treatment. Call 07575 424024 or book online.
Remote consultations · UK-wide · 60 minutes · Book via call or online request