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What are the side effects of taking black tea?

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Side effects of black tea (most often in high amounts) may include:

  • Anxiety and difficulty sleeping
  • Faster breathing
  • Headache
  • Increased urination
  • Irregular heartbeat
  • Nausea and vomiting
  • Nervousness and restlessness
  • Ringing in the ears
  • Tremors

From: Black Tea WebMD Medical Reference

SOURCES:

National Cancer Institute web site: "Tea and Cancer Prevention Fact Sheet."

Roberts, A. , 2005. Alternative Medicine Review

The Leaf web site: "Oxidation and Fermentation in Tea Manufacture."

National Cancer Institute web site: "Tea and Cancer Prevention Fact Sheet."

Natural Medicines Comprehensive Database: "Black Tea."

Baker, J.A. , January-February 2007. International Journal of Gynecological Cancer

Gardner, E.J. . January 2007. European Journal of Clinical Nutrition

Hodgson, J.M.  , January 19, 2013. Food and Function

Hodgson, J.M. , December 2010. Molecular Aspects of Medicine

Bersniak, A.  , Nov. 8, 2012. BMJ Open

Reviewed by Carmen Patrick Mohan on May 08, 2017

SOURCES:

National Cancer Institute web site: "Tea and Cancer Prevention Fact Sheet."

Roberts, A. , 2005. Alternative Medicine Review

The Leaf web site: "Oxidation and Fermentation in Tea Manufacture."

National Cancer Institute web site: "Tea and Cancer Prevention Fact Sheet."

Natural Medicines Comprehensive Database: "Black Tea."

Baker, J.A. , January-February 2007. International Journal of Gynecological Cancer

Gardner, E.J. . January 2007. European Journal of Clinical Nutrition

Hodgson, J.M.  , January 19, 2013. Food and Function

Hodgson, J.M. , December 2010. Molecular Aspects of Medicine

Bersniak, A.  , Nov. 8, 2012. BMJ Open

Reviewed by Carmen Patrick Mohan on May 08, 2017

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What interactions may occur when drinking black tea?

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