PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What is L-tryptophan?

ANSWER

L-tryptophan is an essential amino acid that helps the body make proteins and certain brain-signaling chemicals.

Your body changes L-tryptophan into a brain chemical called serotonin. Serotonin helps control your mood and sleep.

From: L-tryptophan WebMD Medical Reference

SOURCES:

News release, National Institute of Mental Health.

National Center for Complementary and Alternative Medicine web site: "Sleep Disorders and CAM."

Allan, J.A. , November 2011. Arthritis and Rheumatism

Fernstrom J.D. , December 2012. The Journal of Nutrition

Castell, L.M. , 1999. Advances in Experimental Medicine and Biology

Shannon, M.W., Borron, S.W., Burns, M.J., editors, , 4th edition, Saunders Elsevier, 2007. Shannon: Haddad and Winchester's Clinical Management of Poisoning and Drug Overdose

Gold Standard Database: "L-tryptophan Drug Monograph."

Kemper, K.J. , December 2007. Pediatric Clinics of North America

Vigod, S. , June 2010. Psychiatric Clinics of North America

Alternative Medicine Review , 2006.

Lieberman, H.R., Journal of Nutrition, December 2016. Tryptophan Intake in the US Adult Population Is Not Related to Liver or Kidney Function but Is Associated with Depression and Sleep Outcomes.

Yurcheshen M, Seehuus M, Pigeon W. 2015 Updates on Nutraceutical Sleep Therapeutics and Investigational Research.Evidence-based Complementary and Alternative Medicine,

Richard, D., Dawes, M., Mathias, C., Acheson, A., Hill-Kapturczak, N., Dougherty, D: - , International Journal of Tryptophan Research 2013 LTryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications

Sarris J, A . Am J Psychiatry. June 2016 djunctive Nutraceuticals for Depression: A Systematic Review and Meta-Analyses

Reviewed by Carmen Patrick Mohan on May 12, 2017

SOURCES:

News release, National Institute of Mental Health.

National Center for Complementary and Alternative Medicine web site: "Sleep Disorders and CAM."

Allan, J.A. , November 2011. Arthritis and Rheumatism

Fernstrom J.D. , December 2012. The Journal of Nutrition

Castell, L.M. , 1999. Advances in Experimental Medicine and Biology

Shannon, M.W., Borron, S.W., Burns, M.J., editors, , 4th edition, Saunders Elsevier, 2007. Shannon: Haddad and Winchester's Clinical Management of Poisoning and Drug Overdose

Gold Standard Database: "L-tryptophan Drug Monograph."

Kemper, K.J. , December 2007. Pediatric Clinics of North America

Vigod, S. , June 2010. Psychiatric Clinics of North America

Alternative Medicine Review , 2006.

Lieberman, H.R., Journal of Nutrition, December 2016. Tryptophan Intake in the US Adult Population Is Not Related to Liver or Kidney Function but Is Associated with Depression and Sleep Outcomes.

Yurcheshen M, Seehuus M, Pigeon W. 2015 Updates on Nutraceutical Sleep Therapeutics and Investigational Research.Evidence-based Complementary and Alternative Medicine,

Richard, D., Dawes, M., Mathias, C., Acheson, A., Hill-Kapturczak, N., Dougherty, D: - , International Journal of Tryptophan Research 2013 LTryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications

Sarris J, A . Am J Psychiatry. June 2016 djunctive Nutraceuticals for Depression: A Systematic Review and Meta-Analyses

Reviewed by Carmen Patrick Mohan on May 12, 2017

NEXT QUESTION:

Why do people take L-tryptophan?

WAS THIS ANSWER HELPFUL

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.