What should you know about green tea and chemotherapy?

A brewed cup contains a different amount and concentration of plant chemicals from capsules, powders, or highly concentrated drinks. Chemotherapy is processed through the body using pathways that can also be affected by foods, herbs, and supplements. Green tea may also contain caffeine, which can worsen restlessness, nausea, reflux, or sleep problems for some people. The answer can depend on the chemotherapy medicine, treatment schedule, liver and kidney function, and other medicines you take.

Tell your oncologist or oncology pharmacist about green tea in every form, including matcha, extracts, slimming products, and combination supplements. Do not start an extract to manage treatment side effects without advice. If your team permits brewed tea, keep the amount and preparation consistent and mention any change. Take chemotherapy medicines exactly as prescribed, and use the eating and drinking plan supplied for your regimen.

Contact your treatment team promptly for repeated vomiting, inability to keep fluids down, yellowing of the skin or eyes, unusually dark urine, severe abdominal pain, confusion, or a new rash after starting a tea product. During chemotherapy, follow the emergency instructions from your unit for fever or sudden worsening, even if you think green tea caused it.

Ask which green tea forms are acceptable with your exact medicines, whether caffeine could aggravate your symptoms, and when you should stop or restart any tea product around an infusion.