Drug interactions
Green tea + Norepinephrine
Severity: Minor
Green tea and Norepinephrine: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Caffeine can add to the pressor and chronotropic effects of norepinephrine. In patients receiving norepinephrine infusions, who are usually critically ill and monitored, oral green tea intake is uncommon and the effect is likely small.
What this interaction means in plain words
Green tea and Norepinephrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive sympathomimetic cardiovascular stimulation from caffeine and norepinephrine.
What to do
Titrate norepinephrine to blood pressure and heart rate response as usual. Avoid large amounts of caffeinated tea in patients on infusions.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Green tea
- Adenosine + Green tea Moderate
- Benzphetamine + Green tea Moderate
- Bortezomib + Green tea Moderate
- Dextroamphetamine + Green tea Moderate
- Diethylpropion + Green tea Moderate
- Ephedrine + Green tea Moderate
Frequently asked questions
Can I take Green tea with Norepinephrine?
MediHelp rates the interaction as minor. Green tea and Norepinephrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Caffeine can add to the pressor and chronotropic effects of norepinephrine. In patients receiving norepinephrine infusions, who are usually critically ill and monitored, oral green tea intake is uncommon and the effect is likely small.
How serious is the interaction between Green tea and Norepinephrine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate norepinephrine to blood pressure and heart rate response as usual. Avoid large amounts of caffeinated tea in patients on infusions.
What other medicines interact with Green tea?
MediHelp also lists interactions of Green tea with, for example, Adenosine, Benzphetamine, Bortezomib. The full list is on the Green tea page.
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