Effectiveness Rating for 5-HTP's Ability to Improve Mood

The effectiveness rating is a measure of how well 5-htp is able to improve mood. The overall rating for this claim is 1 out of 3. There is little if any research to warrant the use of 5-HTP to improve mood. Using 5-HTP to improve mood will probably not yeild any positive results and is likely a waste of money.

Confidence Rating for 5-HTP's Ability to Improve Mood

The confidence rating is a mesure of how valid the effectiveness rating is. This rating is based on how many studies are included in the database on this topic.

There are 3 studies in the database on 5-htp; the confidence rating is 60. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating.

5-HTP Dose to Improve Mood

Dosage Frequency Daily Total Effectiveness Rating of Dosage
50mg twice daily 100mg
544.5mg once daily 544.5mg

These dosages are based on body weight. The default value is 150 pounds. Enter your weight and click update to get appropriate dosages for your own body weight.


Title of Study
Oral administration of 5‐hydroxytryptophan (5‐HTP) impairs decision making under ambiguity but not under risk: evidence from the Iowa Gambling Task
The Effects of 5-Hydroxytryptophan in Combination with Different Fatty Acids on Gastrointestinal Functions: A Pilot Experiment
The effects of oral 5-hydroxytryptophan administration on feeding behavior in obese adult female subjects