a Drenal

a Drenal

RLC Labs4.8 (46 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 30 servings
Goals
$55.99 $1.86 per serving

Product analysis

57 out of 100

a Drenal may offer limited support for short-term tension and calm attention through theanine. Its ginseng-containing combination may be less suited to a bedtime routine.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality52

The rhodiola species and L-theanine are identified favorably. Eleuthero's plant part is unclear, and several other preparations lack enough information for a quality comparison.

Ingredient Transparency88

Every ingredient amount and most forms are listed. Some preparations remain unspecified, limiting comparison between herbal versions.

Value For Money29

Several key ingredients offer poor value at the serving cost, including rhodiola, theanine and ginger. Price comparisons for much of the remaining formula are uncertain.

Customer Satisfaction72

Customer ratings are very positive. Very few ratings are available, so buyer opinion remains less settled.

Product Focus48

The many ingredients span stress, attention and other health uses. Theanine has the clearest limited connection, while ginseng makes the combination less focused on winding down for sleep.

Format
Capsule
Container
120 Capsule(s)
Per serving
$1.86
Customer rating
4.8 · 46 ratings
Report analysis

Goals

Mood Support
Impact
Moderate effect
D- Ingredient FitF PathwaysB- EvidenceA+ Formulation Logic
Ashwagandha · 150 mg
Study evidence
Rhodiola Supportive 15 studies
Theanine Supportive 12 studies
Productivity Boost
Impact
Moderate effect
D Ingredient FitD- PathwaysC EvidenceA+ Formulation Logic
Cordyceps · 400 mgCordyceps · 400 mgCordyceps · 400 mgEleuthero · 100 mgEleuthero · 100 mgTheanine · 100 mg
Study evidence
Cordyceps Not classified 1 study
Eleuthero Not classified

No linked studies yet.

Rhodiola Supportive 7 studies
Theanine Supportive 5 studies
Stress Relief
Impact
High effect
C- Ingredient FitC- PathwaysC+ EvidenceA+ Formulation Logic
Ashwagandha · 150 mgEleuthero · 100 mgTheanine · 100 mg
Study evidence
Rhodiola Supportive 16 studies
Theanine Supportive 16 studies
Mental Focus
Impact
Moderate effect
D Ingredient FitD- PathwaysC EvidenceA Formulation Logic
Theanine · 100 mg
Study evidence
Eleuthero Disputed 3 studies
Rhodiola Supportive 15 studies
Theanine Supportive 19 studies
Energy
Impact
Moderate effect
D+ Ingredient FitF PathwaysC EvidenceA+ Formulation Logic
Vitamin B5 · 250 mg
Study evidence
Cordyceps Supportive 2 studies
Eleuthero Disputed 3 studies
Rhodiola Supportive 18 studies
Theanine Not classified

No linked studies yet.

Brain Health
Impact
Moderate effect
D- Ingredient FitD- PathwaysB- EvidenceA+ Formulation Logic
Ashwagandha · 150 mg
Study evidence
Rhodiola Supportive 8 studies
Theanine Supportive 17 studies

Ingredients

IngredientAmount per servingScore
Pantothenic Acid (Calcium D-Pantothenate)
250 mg
Cordyceps sinensis powder
400 mg 34
Adrenal Tissue (organic Bovine)
250 mg
Ashwagandha (Withanolides)
150 mg 85
Rhodiola rosea (Rosavins)
100 mg 71
Siberian Eleuthero (Eleutherosides)
100 mg 68
Korean Ginseng (Ginsenosides)
100 mg
Astragalus membranaceus
100 mg 100
Epimedium grandiflorum powder
100 mg
L-Theanine (Green Tea)
100 mg 76
Ginger (Gingerols)
50 mg 69
Beta-Sitosterol
40 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value
Each serving provides 100 mg of L-theanine at a very high cost for the amount. The amount falls within the range associated with relaxation and focus. No branded form or additional purity claim is specified.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

The ingredient is L-theanine. No branded form or additional purity claim is specified.
Isomer Specificity (L-Theanine)
The form is L-theanine.
Branded Forms & Purity Standards
No branded form or additional purity claim is specified.

Dose, Safety & Label Transparency100

The amount is clearly stated as 100 mg per serving. The amount falls within the range associated with relaxation and focus.
Theanine Dosage Efficacy
Each serving provides 100 mg. The amount falls within the range associated with relaxation and focus.
Label Transparency & Blends
The label states 100 mg of L-theanine per serving.

Value20

The cost is very high for the amount of L-theanine.
Price per 100mg L-Theanine
The cost per 100 mg of L-theanine is very high.
C+ Composition And Label DisclosureA+ Composition And Label DisclosureF Commercial Price And Usability
Each serving provides 100 mg of Rhodiola rosea, with a high cost for the declared rhodiola amount based on the full serving price. It declares 3% rosavins, but the salidroside percentage is unknown.
How this ingredient is rated

Composition and Label Disclosure68

The source is Rhodiola rosea. It declares 3% rosavins, but the salidroside percentage is unknown.
Declared Rhodiola Marker Profile
It declares 3% rosavins, but the salidroside percentage is unknown.
Rhodiola Species Detail
The source is Rhodiola rosea.

Composition and Label Disclosure100

The serving declares 100 mg of rhodiola. No flagged artificial additives or flow agents are recorded.
Rhodiola Amount Disclosure
The serving declares 100 mg of rhodiola as Rhodiola rosea.
Other Ingredients Disclosure
No flagged artificial additives or flow agents are recorded.

Commercial Price and Usability20

The cost per 200 mg of declared rhodiola is high. It uses the full serving price.
Cost per 200 mg Declared Rhodiola
The cost per 200 mg of declared rhodiola is high. The calculation uses the full serving price.
C Composition And Label DisclosureA+ Composition And Label DisclosureF Commercial Price And Usability
The serving lists 100 mg of eleuthero at a high cost per serving. The plant part is not specified in the available information. The preparation lists 0.8% eleutherosides.
How this ingredient is rated

Composition and Label Disclosure60

The plant part is not specified in the available information. The preparation lists 0.8% eleutherosides.
Eleutheroside Marker Disclosure
The preparation lists 0.8% eleutherosides.
Target Plant-Part Identification
The plant part is not specified in the available information.

Composition and Label Disclosure100

The selected serving lists 100 mg of eleuthero.
Eleuthero Amount Disclosure
The selected serving lists 100 mg of eleuthero.

Commercial Price and Usability20

The whole-product cost per serving is high.
Selected-Serving Price Comparison
The whole-product cost per serving is high.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
    Leonard M; Dickerson B; Estes L; Gonzalez DE; Jenkins V; Johnson S; Xing D; Yoo C; Ko J; Purpura M; Jäger R; Faries M; Kephart W; Sowinski R; Rasmussen CJ; Kreider RB · Nutrients · 2024
    Randomized trial59 participantsBrain Health Cognitive Support Energy forAshwagandha
  2. Effect of ashwagandha (Withania somnifera) extract with Sominone (Somin-On™) to improve memory in adults with mild cognitive impairment: A randomized, double-blind, placebo-controlled study.
    Rai HP; Mishra DN · Journal of psychopharmacology (Oxford, England) · 2025
    Randomized trial40 participantsBrain Health Cognitive Support Mental Focus forAshwagandha
  3. Efficacy of Withania somnifera supplementation on adult's cognition and mood.
    Remenapp A; Coyle K; Orange T; Lynch T; Hooper D; Hooper S; Conway K; Hausenblas HA · Journal of Ayurveda and integrative medicine · 2022
    Randomized trial60 participantsBrain Health Cognitive Support Productivity Boost forAshwagandha
  4. A clinical assessment of the therapeutic effects of Ashwagandha root extract on cognitive performance, sleep, and fatigue in children aged 6-12 years.
    Saxena A; Lopresti A; Sharif M; Elon N; Suri R; Langade DK · Frontiers in nutrition · 2026
    Randomized trial85 participantsBrain Health Mental Focus forAshwagandha
  5. Efficacy and Safety of Ashwagandha Root Extract on Cognitive Functions in Healthy, Stressed Adults: A Randomized, Double-Blind, Placebo-Controlled Study.
    Gopukumar K; Thanawala S; Somepalli V; Rao TSS; Thamatam VB; Chauhan S · Evidence-based complementary and alternative medicine : eCAM · 2022
    Randomized trial130 participantsBrain Health Sleep Support Stress Relief forAshwagandha
  6. Dose-Response Effects of Short-Term Rhodiola rosea (Golden Root Extract) Supplementation on Anaerobic Exercise Performance and Cognitive Function in Resistance-Trained Athletes: A Randomized, Crossover, Double-Blind, and Placebo-Controlled Study.
    Koozehchian MS; Newton AT; Mabrey G; Bonness FM; Rafajlovska R; Naderi A · Nutrients · 2025
    Randomized trial27 participantsBrain Health Mental Focus forRhodiola
  7. A combination of green tea, rhodiola, magnesium and B vitamins modulates brain activity and protects against the effects of induced social stress in healthy volunteers.
    Boyle NB; Billington J; Lawton C; Quadt F; Dye L · Nutritional neuroscience · 2022
    Randomized trial100 participantsBrain Health forRhodiola
  8. Rosenroot (Rhodiola rosea): traditional use, chemical composition, pharmacology and clinical efficacy.
    Panossian A; Wikman G; Sarris J · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2010
    Narrative reviewBrain Health forRhodiola
  9. Rhodiola rosea in stress induced fatigue--a double blind cross-over study of a standardized extract SHR-5 with a repeated low-dose regimen on the mental performance of healthy physicians during night duty.
    Darbinyan V; Kteyan A; Panossian A; Gabrielian E; Wikman G; Wagner H · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2001
    Randomized trial56 participantsBrain Health Productivity Boost forRhodiola
  10. Effects of a Rhodiola rosea extract on mental resource allocation and attention: An event-related potential dual task study.
    Koop T; Dienel A; Heldmann M; Münte TF · Phytotherapy research : PTR · 2021
    Single-arm trial50 participantsBrain Health Cognitive Support forRhodiola
  11. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsBrain Health Cognitive Support Sleep Support forTheanine
  12. A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialBrain Health Stress Relief forTheanine
  13. 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.
    Payne ER; Aceves-Martins M; Dubost J; Greyling A; de Roos B · Nutrition reviews · 2025
    Meta-analysis50 studies pooledBrain Health Cognitive Support Mental Focus forTheanine
  14. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
    Foxe JJ; Morie KP; Laud PJ; Rowson MJ; de Bruin EA; Kelly SP · Neuropharmacology · 2012
    Randomized trial27 participantsBrain Health Cognitive Support forTheanine
  15. Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
    Baba Y; Inagaki S; Nakagawa S; Kaneko T; Kobayashi M; Takihara T · Journal of medicinal food · 2021
    Randomized trialBrain Health Mental Focus Productivity Boost forTheanine
  16. A standardized Ashwagandha root extract alleviates stress, anxiety, and improves quality of life in healthy adults by modulating stress hormones: Results from a randomized, double-blind, placebo-controlled study.
    Majeed M; Nagabhushanam K; Mundkur L · Medicine · 2023
    Randomized trial54 participantsCognitive Support Mental Focus forAshwagandha
  17. Efficacy and safety of ashwagandha root extract in children and adolescents with mild attention-deficit/hyperactivity disorder: a randomized, double-blind, placebo-controlled trial.
    Naik S; Muralidhar G; Rao BS; Agarwal S; Jain M · Journal of medicine and life · 2026
    Randomized trial58 participantsCognitive Support Mental Focus forAshwagandha
  18. No benefit adding eleutherococcus senticosus to stress management training in stress-related fatigue/weakness, impaired work or concentration, a randomized controlled study.
    Schaffler K; Wolf OT; Burkart M · Pharmacopsychiatry · 2014
    Randomized trial144 participantsCognitive Support Mental Focus Stress Relief forEleuthero
  19. Evidence-based efficacy of adaptogens in fatigue, and molecular mechanisms related to their stress-protective activity.
    Panossian A; Wikman G · Current clinical pharmacology · 2009
    Narrative reviewCognitive Support Mental Focus forRhodiola Energy Mental Focus forEleuthero
  20. Central additive effect of Ginkgo biloba and Rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy.
    Al-Kuraishy HM · Journal of intercultural ethnopharmacology · 2016
    Clinical trial112 participantsCognitive Support forRhodiola