Mistletoe Therapy in Cancer Care: A Natural Support Worth Knowing About

When facing cancer, many people look for ways to feel better, boost their strength, and support their healing alongside standard treatments like chemotherapy or radiation. One natural option that’s been used for nearly a century—especially in Europe—is mistletoe therapy.

Mistletoe, a plant most of us know from the holidays, has a powerful medicinal side. In cancer care, it’s most often given as a subcutaneous injection, meaning a small shot under the skin. This therapy is now being used by doctors in integrative oncology—a type of care that combines the best of modern medicine with natural, supportive therapies.

What Is Mistletoe Therapy?

Mistletoe (Viscum album) is a plant that grows on trees like apple and oak. When prepared as a medicine, its extracts contain natural substances that can help stimulate the immune system, fight inflammation, and in some cases, even kill cancer cells in lab studies (1).

These extracts are made by companies like Iscador, Helixor, or AbnobaViscum, and are used by trained healthcare professionals—usually as part of a bigger cancer treatment plan.

Why Inject Mistletoe Under the Skin?

Subcutaneous mistletoe is injected into the skin (usually on the belly or upper arm) 2–3 times a week. This helps your body absorb it slowly and naturally.

A small red area or bump may form at the injection site—this is usually a good sign that your immune system is reacting, similar to how it would respond to a mild infection (2).

How Does It Work?

Mistletoe therapy works in several helpful ways:

1. Boosts the immune system – It helps your body’s natural defense cells (like NK cells) work better and produces helpful signals called cytokines (3).

2. May help kill cancer cells – Lab research shows that mistletoe can make some cancer cells self-destruct (a process called apoptosis) (4).

3. Improves how you feel – Studies show that people on mistletoe therapy feel less tired, sleep better, have a better appetite, and often feel more emotionally balanced (5).

4. May help slow cancer progression – Some research even suggests it can slow tumor growth and possibly help people live longer when combined with standard care (6).
   
   

What Are the Benefits?

1. Better Quality of Life

A big review of studies showed that people receiving mistletoe therapy felt better overall—they had more energy, slept better, and had less pain and nausea during cancer treatment (7).

2. Fewer Side Effects from Chemo

Mistletoe has been found to help reduce common chemo side effects like fatigue, low white blood cells, and mouth sores (8).

3. Possible Survival Benefit

Some studies, especially in breast, lung, and pancreatic cancer, showed that people receiving mistletoe with their regular treatment may live longer than those who didn’t get it (9).

4. Comfort at End of Life

In advanced or late-stage cancer, mistletoe has been shown to improve comfort, reduce pain medication needs, and support better emotional well-being.

Is It Safe?

Yes, for most people, subcutaneous mistletoe therapy is very safe. The most common effects are:

• A red bump at the injection site
• Mild flu-like symptoms (like low fever)
• Rare allergic reactions
  

It’s not recommended for people with autoimmune diseases, organ transplants, or known allergies to mistletoe. That’s why it’s important to have a trained doctor guide your treatment.

When Is It Used?

Mistletoe therapy can be helpful at any stage of cancer care:

• During chemo or radiation – to reduce side effects and help energy
• After treatment – to support the immune system and recovery
• In advanced or terminal cancer – to improve comfort and quality of life

Each person gets a custom dose plan, starting with small amounts that slowly increase over time.

Final Thoughts

Mistletoe therapy is one of the most researched natural options in cancer care. It doesn’t replace standard treatments—but it can be a powerful support. It may help you feel better, reduce chemo side effects, and even improve long-term outcomes in some cancers. If you’re interested, talk to a doctor trained in integrative or naturopathic oncology.

References:

1. Horneber, M. A., Bueschel, G., Huber, R., Linde, K., & Rostock, M. (2008). Mistletoe therapy in oncology. The Cochrane database of systematic reviews, 2008(2), CD003297. https://doi.org/10.1002/14651858.CD003297.pub2
2. Paller CJ, Wang L, Fu W, Kumar R, Durham JN, Azad NS, Laheru DA, Browner I, Kachhap SK, Boyapati K, Odeny T, Armstrong DK, Meyer CF, Gaillard S, Brahmer JR, Page I, Wang H, Diaz LA Jr. Phase I Trial of Intravenous Mistletoe Extract in Advanced Cancer. Cancer Res Commun. 2023 Feb 28;3(2):338-346. doi: 10.1158/2767-9764.CRC-23-0002. PMID: 36860652; PMCID: PMC9973409.
3. Büssing A. (2006). Immune modulation using mistletoe (Viscum album L.) extracts Iscador. Arzneimittel-Forschung, 56(6A), 508–515. https://doi.org/10.1055/s-0031-1296818
4. Van Huyen, JP.D., Bayry, J., Delignat, S. et al. Induction of Apoptosis of Endothelial Cells by Viscum album: A Role for Anti-Tumoral Properties of Mistletoe Lectins. Mol Med 8, 600–606 (2002). https://doi.org/10.1007/BF03402170
5. Loef, M., Paepke, D., & Walach, H. (2023). Quality of Life in Breast Cancer Patients Treated With Mistletoe Extracts: A Systematic Review and Meta-Analysis. Integrative cancer therapies, 22, 15347354231198074. https://doi.org/10.1177/15347354231198074
6. Kienle, G. S., Berrino, F., Büssing, A., Portalupi, E., Rosenzweig, S., & Kiene, H. (2003). Mistletoe in cancer – a systematic review on controlled clinical trials. European journal of medical research, 8(3), 109–119.
7. Loef, M., & Walach, H. (2020). Quality of life in cancer patients treated with mistletoe: a systematic review and meta-analysis. BMC complementary medicine and therapies, 20(1), 227. https://doi.org/10.1186/s12906-020-03013-3
8. Eisenbraun, J., Scheer, R., Kröz, M., Schad, F., & Huber, R. (2011). Quality of life in breast cancer patients during chemotherapy and concurrent therapy with a mistletoe extract. Phytomedicine : international journal of phytotherapy and phytopharmacology, 18(2-3), 151–157. https://doi.org/10.1016/j.phymed.2010.06.013
9. Werthmann PG, Kempenich R, Lang-Avérous G, Kienle GS. Long-term survival of a patient with advanced pancreatic cancer under adjunct treatment with Viscum album extracts: A case report. World J Gastroenterol. 2019 Mar 28;25(12):1524-1530. doi: 10.3748/wjg.v25.i12.1524. PMID: 30948915; PMCID: PMC6441914.