Theanine Serene with Relora

product on market Tablet or Pill Source Naturals Serene Science 🟢 Safety: 100/100
Brand: Source Naturals Serene Science
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 38% of ingredients have research evidence
A Label Compliance Grade

Product Label

📄 Open Full PDF View on NIH DSLD →
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Label Data

2 Tablet(s) Serving Size
30 Servings
Other Combinations Product Type
38% Evidence Coverage

Supplement Facts — Evidence Check

Calories
5 Calorie(s)
Total Carbohydrates
1 Gram(s) (1% DV)
300 mg (71% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 300mg
GABA
500 mg
450 mg
📊 Market median: 500.0mg (180 products) 📚 5 studies (Tier A: 0, B: 1)
This product: 450mg
200 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 200mg
Relora
150 mg
100 mg
📊 Market median: 500.0mg (138 products) 📚 2 studies — no high-quality reviews
This product: 100mg

Other Ingredients

Sorbitol Stearic Acid modified Cellulose Gum Silica

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (92% of products) Nutrient (22% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Suggested Use: 2 tablets daily.

⚠️ Warnings & Precautions

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Warning: If you are pregnant, may become pregnant, or breastfeeding, or taking any medication including anti-depressant drugs such as MAOIs, SSRIs, or other neuropsychiatric drugs or supplements such as St. John's Wort, consult your health care professional before using this product.

Excessive consumption may impair ability to drive or operate heavy equipment. No recommended for consumption with alcoholic beverages.

🧪 Formulation Notes

Calm mind & body

Serene Science Theanine Serene with Relora contains the amino acid l-theanine, to support relaxation and focused attention, and the calming neurotransmitter GABA. Taurine can support the movement of potassium out of neurons, which may help prevent overexcitation of neurons. It also, features magnesium to support muscle and nerve relaxation, calming holy basil leaf extract and Relora to gently soothe away the tension in your body. Relora contains magnolia and phellodendron extracts which may help relieve temporary anxiety. Try Serene Science Theanine Serene with Relora to start relaxing today.

Suitable for Vegetarians.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, salt, preservatives, or artificial color, flavor or fragrance.

Product Details

UPC / SKU 0 21078 01772 1
DSLD Entry Date 2023-01-23
Product Type Other Combinations
Form Tablet or Pill
Brand Source Naturals Serene Science
DSLD ID 273361
Data Updated 2026-04-11

Research Evidence

37 Research Sources
53 Avg Quality Score
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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