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5-HTP L-Theanine

product on market Capsule AgeImmune Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-Theanine and 5-HTP are supported by moderate evidence for promoting relaxation and mood regulation. Magnesium and B vitamins play essential roles in neurotransmitter synthesis and neurological function. Overall, these ingredients have a strong safety profile based on available research.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for 5-HTP L-Theanine
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

100 mg (24% DV)
Within RDA (0.2× RDA) 316 studies (A:8, B:159)
10 mg (588% DV)
7.7× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
30 mcg (1250% DV)
12.5× RDA — above typical dose 139 studies (A:1, B:44)
400 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)
100 mg
Market median: 100.0mg (116 products) 18 studies (A:0, B:3)

Other Ingredients

Hydroxypropyl Methylcellulose Rice Flour
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Recommended use: Take 1 capsule twice day or 2 capsules before bed. Do not exceed 2 capsules a day.

Warnings & Precautions

Do not exceed 2 capsules a day.

Warnings: Do not use if safety seal is broken.

If you are pregnant, nursing, taking any medications or have a medical conditions, please consult your physician before taking any dietary supplement.

Keep our of reach of children.

Formulation Notes

Yeast-free Non-GMO No preservatives Magnesium stearate free Corn-free Soy-free

Supplement complex with Vitamins B6, B12 and Magnesium

Same formula New look

Non GMO

Vegan

Superior Quality Guarantee

Additional Information

Store at room temperature.

Made in USA

Made in a FDA registered facility

GMP Quality Product

Store in a cool, dark place.

Metadata

Product Details

UPC / SKUX002XI2WBX
DSLD Entry Date2024-08-22
Product TypeOther Combinations
FormCapsule
BrandAgeImmune
DSLD ID317906
Data Updated2026-04-11
Research

Research Evidence

37
Research Sources
53
Avg Quality
22
Rct
10
Systematic Review
3
Meta Analysis
1
Clinical Trial
1
Openfda Safety
B Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials
Systematic Review Nutritional neuroscience 2026 PubMed DOI
B The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Meta Analysis Sleep medicine reviews 2025 PubMed DOI
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010 PubMed DOI
B Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
Rct Nutrients 2019 PubMed DOI
B The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
Systematic Review International journal of molecular sciences 2023 PubMed DOI
B Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Meta Analysis Nutrition reviews 2025 PubMed DOI
B Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
Rct Nutrients 2022 PubMed DOI
B Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study
Rct Nutritional neuroscience 2025 PubMed DOI
B The combined effects of L-theanine and caffeine on cognitive performance and mood
Rct Nutritional neuroscience 2008 PubMed DOI
B Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2014 PubMed DOI
View all evidence for L Theanine →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.