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Standardized Extract Ashwagandha 450 mg

NOW
4.7
★ ★ ★ ★ ★
(58685 ratings)
Ashwagandha 450 mg
Product Image
Score87
A meaningful amount and active-marker standardization provide good transparency, although no branded extract is named. The exact withanolide percentage is not included in the supplied data.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Mood Support
Stress Relief
Brain Health
Cognitive Support
Fitness
Testosterone Support
Muscle Gain
Productivity Boost
Sleep Support
Energy

Score 87

A meaningful amount and active-marker standardization provide good transparency, although no branded extract is named. The exact withanolide percentage is not included in the supplied data.
How scoring works

Also available as

1 option
180 servings Ashwagandha 450 mg • 180 Capsule(s) • 180 servings $14.38 ($0.07 per serving)
$9.85($0.10 per serving)
iHerb
$ 11.26
Daily Vita
$ 11.60
Pure Formulas
$ 10.70
Vitacost
$ 11.26
Amazon
$ 9.85
Report prices

Analysis

withanolide-standardized ashwagandha extract supplies 450 mg in one capsule. A meaningful amount and active-marker standardization provide good transparency, although no branded extract is named.

The focused serving is well aligned with stress, mood, sleep, cognitive, and exercise-support routines. One capsule and a very low serving cost make it an accessible standardized option.

The exact withanolide percentage is not included in the supplied data. Start with the lowest practical serving and judge tolerance before making it a regular part of the routine.

Who is it for
  • Adults seeking standardized ashwagandha
  • Budget-focused users
  • People wanting a substantial one-capsule serving
Best for
  • Daily stress support
  • Low-cost standardized extract
  • Broad mood and sleep routines

Pros

  • Standardized to total withanolides
  • Meaningful 450 mg amount
  • One-capsule serving
  • Very low serving cost

Cons

  • Exact withanolide percentage not supplied
  • No named branded extract
  • No complementary calming ingredient

Warnings

  • Ashwagandha may cause drowsiness or stomach upset; avoid combining it with sedatives until individual effects are known.
  • Avoid ashwagandha during pregnancy, and seek guidance during breastfeeding because safety is not established.
  • Ashwagandha may affect thyroid function and can complicate dosing of thyroid medicines.
  • Stop use and seek care for jaundice, dark urine, or severe fatigue because rare liver injury has been reported with ashwagandha.

Nutrient quality

92 Highest impact

A withanolide-standardized extract offers good form assurance, though no branded source or marker percentage is given. A well-targeted serving and standardized identity provide strong quality at very good value.

Ingredient transparency

85 Highest impact

The extract amount is stated clearly. No proprietary blend hides the listed active doses.

Customer satisfaction

71 High impact

The supplied average is favorable, with very large response volume. Complaint patterns and purpose-related experiences are not supplied.

Value for money

98 Highest impact

Formula quality appears strong for the asking price. Each serving offers very good practical value for its useful active dose.

Report analysis

Goals

Mood Support
Mood Support
Impact
Highest effect
B+ Goal FitA Strength of SupportA CoverageA Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg from NOW covers neurotransmitter support, stress-response or HPA-axis support, structural or anti-inflammatory support, producing strong alignment with mood support.

Collection-specific evidence indicates strong dose adequacy and strong form or disclosure quality, with the main limitation being variable evidence across the included actives.

Study evidence
Ashwagandha Supportive 29 studies
Stress Relief
Stress Relief
Impact
Highest effect
A- Goal FitA- Strength of SupportC- CoverageA+ Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg provides 450 mg standardized withanolide ashwagandha and has 58,160 reviews averaging 4.66, indicating strong customer satisfaction. NSF distinguishes facility GMP oversight from finished-product certification, so a current product-specific quality mark should be checked rather than assumed.

NIH notes that ashwagandha can cause drowsiness or stomach upset and may affect thyroid function or interact with medicines, so individual safety fit matters.

Study evidence
Ashwagandha Supportive 47 studies
Brain Health
Brain Health
Impact
Highest effect
B Goal FitA Strength of SupportC+ CoverageA- Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg aligns with Brain Health mainly through Ashwagandha, while the supplied collection analyses average 85.6 and supplied customer feedback is 4.66 from 58,160 reviews.

Its strongest feature is dose adequacy, while coverage remains intentionally narrow; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 12 studies
Cognitive Support
Cognitive Support
Impact
Highest effect
B Goal FitA Strength of SupportC+ CoverageA- Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg aligns with Cognitive Support mainly through Ashwagandha, while the supplied collection analyses average 85.6 and supplied customer feedback is 4.66 from 58,160 reviews.

Its strongest feature is dose adequacy, while coverage remains intentionally narrow; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 17 studies
Fitness
Fitness
Impact
High effect
C+ Goal FitA- Strength of SupportC- CoverageA Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg uses a marker-standardized ashwagandha extract and may support stress adaptation, recovery, and selected performance outcomes, although its fitness role is less direct than core ergogenic ingredients.

The disclosed dose and formula structure support a strong contribution, while evidence and pathway coverage remain the main constraints.

Study evidence
Ashwagandha Supportive 23 studies
Testosterone Support
Testosterone Support
Impact
High effect
C+ Goal FitA- Strength of SupportC- CoverageA Formula Quality
Ashwagandha · 450 mg

Standardized Extract Ashwagandha 450 mg appears best understood as a standardized ashwagandha stress-modulation pathway, and the configured scores reflect that degree of Testosterone Support alignment.

Supplied customer feedback averages 4.66 from 58,160 reviews; nCCIH advises caution with thyroid conditions and hormone-sensitive prostate cancer and notes rare liver injury.

Study evidence
Ashwagandha Supportive 17 studies

Ingredients

IngredientAmount per serving
Ashwagandha extract (Total Withanolides)
 450 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Women Vegetarian
Report overview
Ashwagandha (Total Withanolides) · 450 mg OverallScore86
C Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
+2

NOW Foods Ashwagandha Standardized Extract, 450 mg provides 450 mg of standardized ashwagandha extract and has 58,160 reviews averaging 4.66. Its form, dose, delivery, transparency, and $0.10 per-serving price were evaluated directly against the collection rubric.

View ingredientView products
Loading alternative details
89 Performance

Anxiety & Stress Relief

Nature's Bounty
<p>A 600 mg withanolide-standardized ashwagandha extract is paired with 200 mg L-theanine for broader stress support. The original already supplies a substantial extract amount, so added standardization or complementary ingredients matter more than dose alone. L-theanine adds a separate calming pathway but may be unnecessary for users seeking ashwagandha alone.</p>
88 Performance

Ashwagandha

HTP Hi-Tech Pharmaceuticals
<p>Sensoril, KSM-66, and Ashwapure extracts combine root-and-leaf and root-only approaches with stated standardization markers. The original already supplies a substantial extract amount, so added standardization or complementary ingredients matter more than dose alone. The multi-extract design broadens the profile, though the repeated form listings make total active exposure harder to interpret.</p>
87 Performance

Stress & Anxiety Relief

Solgar
<p>A 600 mg withanolide-standardized extract plus 28 mg saffron broadens stress and mood support beyond a single-ingredient product. The original already supplies a substantial extract amount, so added standardization or complementary ingredients matter more than dose alone. Saffron raises cost and complexity, so the advantage depends on wanting both ingredients.</p>
84 Budget

Ashwagandha Root Extract

Solgar
<p>A standardized 300 mg withanolide extract plus 100 mg root powder provides a clear, focused ashwagandha formula. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. The exact withanolide percentage is not stated, which limits direct potency comparison.</p>
82 Budget

Ashwagandha 500 mg

Nature's Way
<p>A 500 mg root extract standardized to withanolides offers a simple higher-amount option without unrelated ingredients. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. A named extract and exact withanolide percentage are not provided.</p>
83 Budget

Organic Ashwagandha

Himalaya
<p>Root powder, a withanolide-standardized extract, and a supercritical CO2 extract provide multiple ashwagandha forms in one formula. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. The combined approach is broader, but the contribution of each form is not directly comparable to a single branded extract.</p>
86 Value

Ashwagandha With Sensoril 125 mg

Doctor's Best
<p>A 250 mg root-and-leaf extract standardized to withanolide glycosides provides a concise, clearly defined alternative. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. The serving cost is justified mainly by standardization rather than exceptional dose depth.</p>
84 Value

Ashwagandha

Pure Encapsulations
<p>A 500 mg root extract standardized to withanolides offers substantial single-ingredient coverage with no added botanicals. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. The unnamed extract and undisclosed withanolide percentage keep value from being fully established.</p>
81 Value

Ashwagandha Root Extract 470 mg

Solaray
<p>A 470 mg root extract provides a straightforward, relatively high-amount capsule option. It is one of the lowest-priced eligible alternatives, although it does not cost less than the original. Standardization is not stated, so the lower information quality offsets some of the apparent dose value.</p>
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 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 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. 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 forAshwagandha
  7. 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 forAshwagandha
  8. Effects of multi-herb and ashwagandha root formulas on stress modulation: a randomized, double-blind, placebo-controlled clinical study.
    McKinney E; Stewart J; Kewalramani R; Singh S · Trials · 2026
    Randomized trial186 participantsEnergy Mood Support forAshwagandha
  9. Efficacy and Safety of Low-Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo-Controlled, Double-Blind, Clinical Trial.
    Prajapati H; Satia M; Shah D; Basera I; Shah T · Phytotherapy research : PTR · 2026
    Randomized trialEnergy forAshwagandha
  10. Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
    Vittal M; Vinciguerra M · Biogerontology · 2025
    Narrative reviewEnergy forAshwagandha
  11. Safety and Efficacy of Ashwagandha Root Extract on Cognition, Energy and Mood Problems in Adults: Prospective, Randomized, Placebo-Controlled Study.
    Kale S; Lopresti A; Suri R; Garg N; Langade D · Journal of psychoactive drugs · 2026
    Randomized trial120 participantsEnergy Productivity Boost forAshwagandha
  12. Effects of an Aqueous Extract of Withania somnifera on Strength Training Adaptations and Recovery: The STAR Trial.
    Ziegenfuss TN; Kedia AW; Sandrock JE; Raub BJ; Kerksick CM; Lopez HL · Nutrients · 2019
    Randomized trial38 participantsFitness forAshwagandha
  13. Efficacy of Ashwagandha (Withania somnifera [L.] Dunal) in improving cardiorespiratory endurance in healthy athletic adults.
    Choudhary B; Shetty A; Langade DG · Ayu · 2016
    Randomized trial50 participantsFitness forAshwagandha
  14. Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study.
    Verma N; Gupta SK; Patil S; Tiwari S; Mishra AK · F1000Research · 2024
    Randomized trial80 participantsFitness Muscle Gain forAshwagandha
  15. Effects of Withania somnifera (L.) Dunal (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
    Zhu X; Zeng Q; Lei Y; Xu D · Frontiers in pharmacology · 2026
    Meta-analysis1,249 participants20 studies pooledFitness Muscle Gain Testosterone Support forAshwagandha
  16. Effects of eight-week supplementation of Ashwagandha on cardiorespiratory endurance in elite Indian cyclists.
    Shenoy S; Chaskar U; Sandhu JS; Paadhi MM · Journal of Ayurveda and integrative medicine · 2013
    Randomized trial40 participantsFitness forAshwagandha
  17. A proprietary herbal extract of ashwagandha root for stress and anxiety in healthy adults: a randomized, double-blind, three-arm, placebo-controlled efficacy and safety study.
    West RE; Biswas A; Rao R; Tayade H; Ademola J · Journal of medicine and life · 2026
    Randomized trial141 participantsMood Support forAshwagandha
  18. Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis.
    Fatima K; Malik J; Muskan F; Raza G; Waseem A; Shahid H; Jaffery SF; Khan U; Zaheer MK; Shaikh Y; Rashid AM · Human psychopharmacology · 2024
    Meta-analysis254 participants5 studies pooledMood Support forAshwagandha
  19. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults.
    Chandrasekhar K; Kapoor J; Anishetty S · Indian journal of psychological medicine · 2013
    Randomized trial64 participantsMood Support Stress Relief forAshwagandha
  20. Medicinal herbs for the treatment of anxiety: A systematic review and network meta-analysis.
    Zhang W; Yan Y; Wu Y; Yang H; Zhu P; Yan F; Zhao R; Tian P; Wang T; Fan Q; Su Z · Pharmacological research · 2022
    Meta-analysis29 participants29 studies pooledMood Support forAshwagandha
  21. Ashwagandha Root Extract Stabilises Physiological Stress Responses in Male and Female Team Sports Athletes During Pre-Season Training.
    Coope OC; Otaegui E; Suárez M; Levington A; Abad-Sangrà M; Lloyd B; Spurr TJ; Roman-Viñas B · Nutrients · 2026
    Randomized trial56 participantsMuscle Gain forAshwagandha
  22. Evaluation of Withania somnifera (L.) Dunal (Ashwagandha) on Physical Performance, Biomarkers of Inflammation, and Muscle Status in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled Study.
    Raut A; Tripathi R; Marathe PA; Uchil DA; Agashe S; Rege N; Vaidya AB · Cureus · 2024
    Randomized trialMuscle Gain forAshwagandha
  23. Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial.
    Wankhede S; Langade D; Joshi K; Sinha SR; Bhattacharyya S · Journal of the International Society of Sports Nutrition · 2016
    Randomized trial57 participantsMuscle Gain forAshwagandha
  24. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis.
    Cheah KL; Norhayati MN; Husniati Yaacob L; Abdul Rahman R · PloS one · 2021
    Meta-analysis400 participants5 studies pooledProductivity Boost forAshwagandha
  25. Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study.
    Langade D; Thakare V; Kanchi S; Kelgane S · Journal of ethnopharmacology · 2021
    Randomized trial80 participantsProductivity Boost Sleep Support forAshwagandha
  26. Effect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participants.
    Pingali U; Pilli R; Fatima N · Pharmacognosy research · 2014
    Randomized trial20 participantsProductivity Boost forAshwagandha
  27. A randomized, double blind, placebo controlled study to evaluate the effects of ashwagandha (Withania somnifera) extract on sleep quality in healthy adults.
    Deshpande A; Irani N; Balkrishnan R; Benny IR · Sleep medicine · 2021
    Randomized trial150 participantsSleep Support forAshwagandha
  28. Efficacy and safety of Ashwagandha root extract sustained-release (AshwaSR) capsules in healthy adult, stressed subjects: A randomized, double-blind, placebo-controlled, parallel-group, 3-arm clinical trial.
    Thanawala S; Shah R; Alluri KV; Bhupathiraju K; Desomayanandanam P; Bhuvenendran A · Medicine · 2026
    Randomized trial135 participantsSleep Support forAshwagandha
  29. Efficacy and Safety of Ashwagandha (Withania somnifera) Root Extract in Insomnia and Anxiety: A Double-blind, Randomized, Placebo-controlled Study.
    Langade D; Kanchi S; Salve J; Debnath K; Ambegaokar D · Cureus · 2020
    Randomized trial60 participantsSleep Support forAshwagandha
  30. An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study.
    Lopresti AL; Smith SJ; Malvi H; Kodgule R · Medicine · 2019
    Randomized trial60 participantsStress Relief forAshwagandha
  31. Shoden promotes Relief from stress and anxiety: A randomized, double-blind, placebo-controlled study on healthy subjects with high stress levels.
    Mishra DN; Kumar M · Heliyon · 2024
    Randomized trial60 participantsStress Relief forAshwagandha
  32. Adaptogenic and Anxiolytic Effects of Ashwagandha Root Extract in Healthy Adults: A Double-blind, Randomized, Placebo-controlled Clinical Study.
    Salve J; Pate S; Debnath K; Langade D · Cureus · 2020
    Randomized trial60 participantsStress Relief forAshwagandha
  33. Effect of standardized root extract of ashwagandha (Withania somnifera) on well-being and sexual performance in adult males: A randomized controlled trial.
    Chauhan S; Srivastava MK; Pathak AK · Health science reports · 2024
    Randomized trial50 participantsTestosterone Support forAshwagandha
  34. Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review.
    Smith SJ; Lopresti AL; Teo SYM; Fairchild TJ · Advances in nutrition (Bethesda, Md.) · 2021
    Systematic review32 studies pooledTestosterone Support forAshwagandha
  35. Do "testosterone boosters" really increase serum total testosterone? A systematic review.
    Morgado A; Tsampoukas G; Sokolakis I; Schoentgen N; Urkmez A; Sarikaya S · International journal of impotence research · 2024
    Systematic review3 studies pooledTestosterone Support forAshwagandha
  36. Safety and Tolerability of Withania somnifera Root Extract in Healthy Male Participants: A Pilot Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
    Vaidya N; Agarwal R; Kshirsagar P; Ganu G; Nagore D; Mehta A; Vora A; Nair S · Food science & nutrition · 2025
    Randomized trial40 participantsTestosterone Support forAshwagandha