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Last reviewed on RxList: 9/24/2019
5-HTP Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 9/24/2019

5-HTP Phenolic (5-hydroxytryptophan liquid) is indicated to be used according to standard homeopathic indication and may be used for conditions related to serotonin levels, including insomnia, depression, fibromyalgia, obesity, and headaches, including migraines. This homeopathic product has not been evaluated by the Food and Drug Administration (FDA) for safety or efficacy. The FDA is not aware of scientific evidence to support homeopathy as effective. Common side effects of 5-HTP include:

  • nausea,
  • heartburn,
  • gas,
  • feelings of fullness, and
  • stomach rumbling sensations.

The dose of 5-HTP for adults and children is 5 to 10 drops orally, 1 time daily or as otherwise directed by a health care professional. 5-HTP may interact with antidepressants, carbidopa, tramadol, dextromethorphan (found in cough syrups), demerol, and triptans. Tell your doctor all medications and supplements you use. Tell your doctor if you are pregnant or plan to become pregnant before using 5-HTP. Consult your doctor before breastfeeding.

Our 5-HTP Phenolic (5-hydroxytryptophan liquid) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


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5-HTP Professional Information


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Read the entire FDA prescribing information for 5-HTP (5-hydroxytryptophan Liquid)


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© 5-HTP Patient Information is supplied by Cerner Multum, Inc. and 5-HTP Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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