- Alcohol and chemotherapy are incompatible - both are processed by the liver, impairing drug action and worsening side effects.
- Alcohol worsens mouth ulcers (mucositis) and nerve damage (neuropathy) and reacts with other medications.
- All alcohol is ethanol; its metabolite acetaldehyde disrupts DNA synthesis and repair.
- Better choices during treatment: green tea, herbal teas, mineral water and fresh vegetable juices.
A cocktail at a party, a glass of wine at the weekend, or a beer among friends — alcohol is an important part of life for many people. The question is whether it can be combined with chemotherapy. The short answer is no.
Why alcohol and chemotherapy are incompatible
- Most drugs used to treat cancer are broken down by the liver. Alcohol is also broken down by the liver, so this can cause inflammation, impair the action of chemotherapy drugs, and increase chemotherapy's side effects.
- Mouth ulcers (mucositis) are a common chemotherapy side effect, and alcohol can make this problem worse.
- Other medications — for pain, insomnia or nausea — can also react with alcohol, causing strong side effects.
- Alcohol damages nerves,4 and neuropathy after chemotherapy can become even worse.5
But maybe just one glass of wine?

Whether wine or spirits, all alcohol is ethanol. Ethanol is a substance that causes cancer. Acetaldehyde (formed in the body after drinking alcohol) is the most toxic alcohol metabolite — it disrupts DNA synthesis and repair,6 which further contributes to cancer growth. Statements like "a glass of wine is nothing" or "a shot of brandy is healthy" are not supported by the research.
So what to drink during chemotherapy, when others are drinking alcohol and "having fun"?
With cancer, especially in later stages, emotional state becomes no less important than the physical. People often look to alcohol as emotional support or a way to lift the mood, but in oncology alcohol is "digging the hole deeper." This does not mean you must isolate yourself — you can take full part in celebrations by choosing drinks that not only do no harm but actively help your body and mind. Bitter green tea is a "DNA repair tool"; herbal teas, mineral water, and freshly made vegetable juices are good alternatives. Concentrated mushroom-polysaccharide formulas support the immune system during treatment.
Alcohol impairs chemotherapy and the immune system. Concentrated mushroom polysaccharides are studied for supporting immunity during treatment.
Lentinan AXT by Zenius Labs™ →No. Most chemotherapy drugs are broken down by the liver, as is alcohol, so combining them can cause inflammation, impair drug action and increase side effects. Alcohol also worsens mouth ulcers (mucositis) and nerve damage (neuropathy), and can react with pain, sleep and anti-nausea medications.
All alcohol is ethanol, a cancer-causing substance. Its metabolite acetaldehyde disrupts DNA synthesis and repair, contributing to cancer growth. The research does not support claims that a small amount is harmless or healthy.
You can take full part in celebrations with drinks that help rather than harm: bitter green tea (studied as a DNA-repair support), herbal teas, mineral water, and freshly made vegetable juices.
Yes. Alcohol damages nerves, and neuropathy after chemotherapy can become even worse with alcohol use.
- Alcoholic neuropathy: possible mechanisms and future treatment possibilities. PubMed
- Managing Peripheral Neuropathy. cancer.org
- Effects of acetaldehyde-induced DNA lesions on DNA metabolism. Genes and Environment
- There is no safe level of alcohol, new study confirms. WHO
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- Green tea effects on cognition, mood and human brain function: A systematic review. PubMed
- Effect of Green Tea Phytochemicals on Mood and Cognition. PubMed
- Green Tea, Coffee, and Caffeine Consumption Are Inversely Associated with Self-Report Lifetime Depression. PubMed
- Cognitive function and tea consumption in community dwelling older Chinese in Singapore. PubMed
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- Targeting DNA Repair Endonuclease ERCC1-XPF with Green Tea Polyphenol EGCG to Enhance Cisplatin Efficacy in Cancer Cells. PubMed
- Biophysical Approach to Mechanisms of Cancer Prevention and Treatment with Green Tea Catechins. PubMed
- Digestive stability and absorption of green tea polyphenols: Influence of acid and xylitol addition. ScienceDirect
- Balbo S et al. Implications of acetaldehyde-derived DNA adducts for understanding alcohol-related carcinogenesis. Advances in experimental medicine and biology. 2015. PubMed
- Wang H et al. Efficacy of biological response modifier lentinan with chemotherapy for advanced cancer: a meta-analysis. Cancer medicine. 2017. PubMed
- Oba K et al. Efficacy of adjuvant immunochemotherapy with polysaccharide K for patients with curative resections of gastric cancer. Cancer immunology, immunotherapy : CII. 2007. PubMed
- Cheng SC et al. mTOR- and HIF-1α-mediated aerobic glycolysis as metabolic basis for trained immunity. Science (New York, N.Y.). 2014. PubMed