Diet Support

Diet Support

NOW4.4 (1,324 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 60 servings
Goals

Product analysis

55 out of 100

Diet Support supplies nutrients that help normal energy metabolism, especially when intake is low. Its weight-loss evidence is mixed and suggests, at most, small or limited effects.

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

Nutrient Quality38

Chromium has an identified chelated source, while several other ingredient quality comparisons remain uncertain. Unresolved green-tea preparation details also prevent a confident judgment of its active contribution.

Ingredient Transparency71

Listed amounts and many forms are disclosed, supporting basic serving comparisons. Some forms and mixture proportions remain unclear, limiting a complete composition check.

Value For Money51

Iodine and chromium offer reasonably favorable value, while L-carnitine is more moderate. Value remains uncertain for several other ingredients, including green tea.

Customer Satisfaction77

Customer ratings are positive across more than a thousand reviews. That gives a broad view of satisfaction without establishing weight-loss results.

Product Focus49

The nutritional contribution to normal metabolism is clearer than any weight-loss effect. Green-tea preparation and caffeine exposure remain unresolved, so a reliable increase in energy use cannot be established.

Format
Capsule
Container
120 Capsule(s)
Per serving
$0.25
Customer rating
4.4 · 1,324 ratings
Report analysis

Goals

Weight Loss
Impact
Moderate effect
D+ Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Iodine · 150 mcgGreen Tea · 200 mg

Green tea has mixed, preparation-dependent weight findings, while chromium at 200 mcg has low-quality evidence for a very small effect. Garcinia findings are inconsistent, and L-carnitine at 250 mg gives limited additional support. Tea mass cannot be treated as its catechin or caffeine content.

How this product is rated for Weight Loss

Ingredient fit53

The relevant ingredients share the formula with ingredients directed at other goals. The assessed amounts provide a partial match to the saved comparisons.
Goal fit
The relevant ingredients share the formula with ingredients directed at other goals.
Dose adequacy
The assessed amounts provide a partial match to the saved comparisons.

Pathways10

The strongest saved connection is thermogenesis and energy expenditure, with limited coverage. None of the reviewed routes reaches the saved level for broad coverage.
Depth
The strongest saved connection is thermogenesis and energy expenditure, with limited coverage.
Breadth
None of the reviewed routes reaches the saved level for broad coverage.

Evidence76

Green Tea leads the saved evidence comparison at the assessed amount; this does not imply a large or sustained weight change. The assessed preparations match those recognized in the saved review.
Evidence strength
Green Tea leads the saved evidence comparison at the assessed amount; this does not imply a large or sustained weight change.
Studied preparation
The assessed preparations match those recognized in the saved review.

Formulation logic100

The assessed ingredients can work independently or have their relevant partner. No ingredient conflicts were recorded in the saved assessment. 3 of 3 assessed ingredients reach the saved amount threshold.
Partner coverage
The assessed ingredients can work independently or have their relevant partner.
Conflicts
No ingredient conflicts were recorded in the saved assessment.
Effective doses
3 of 3 assessed ingredients reach the saved amount threshold.
Study evidence
Chromium No effect 24 studies
Green Tea Supportive 42 studies
Iodine Adverse 3 studies
Impact
High effect
C+ Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Niacin · 10 mgVitamin B5 · 10 mgVitamin B6 · 10 mgGreen Tea · 200 mg

B5, B6 and niacin help normal energy metabolism, and iodine supports thyroid hormone production when intake is low. These roles do not establish an additional rise in energy expenditure with adequate intake. Green tea’s relevant catechin preparation and amount are unresolved, and caffeine presence and dose remain unconfirmed because supplied records conflict. A thermogenic contribution cannot be established from those unresolved declarations.

How this product is rated for Metabolism Support

Ingredient fit67

The formula supplies nutrients involved in normal metabolism, with varied amounts and a broader focus than direct energy expenditure.
Goal fit
Recognized metabolic nutrients contribute to the saved finding, while other actives and the product’s broader uses reduce its focus on this goal.
Dose adequacy
Declared amounts provide partial coverage of the supplied comparisons, which do not establish doses that increase calorie expenditure.

Pathways8

The connection is through insulin sensitivity and metabolic hormones, rather than demonstrated thermogenesis.
Depth
The saved finding centers on insulin sensitivity and metabolic hormones; such metabolic markers are distinct from increased calorie expenditure.
Breadth
No evaluated pathway reaches the supplied coverage threshold.

Evidence96

Evidence for normal nutrient functions supports the saved finding; it does not establish an extra metabolic boost when intake is adequate.
Evidence strength
B5 supplies the strongest saved evidence finding, concerning normal nutrient function rather than a demonstrated rise in energy expenditure.
Studied preparation
The counted preparations match those recognized in the supplied comparison; this does not establish thermogenic benefit for the finished product.

Formulation logic96

No unmet partner requirement or specified conflict was identified. Green tea’s amount and the caffeine declaration remain unresolved.
Partner coverage
The counted ingredients have no unmet partner requirement in the supplied findings; this does not establish additional benefit from combining them.
Conflicts
No specified conflict was identified; the caffeine amount remains unresolved, so its amount-dependent check could not be applied.
Effective doses
Green tea lacks the amount needed for the supplied minimum comparison; the other five counted ingredients meet it.
Study evidence
Chromium Supportive 47 studies
Green Tea Supportive 31 studies
Iodine Mixed 17 studies
Niacin Supportive 17 studies
Vitamin B6 Supportive 16 studies
Longevity
Impact
Moderate effect
D- Ingredient FitD- PathwaysB+ EvidenceA+ Formulation Logic
Green Tea · 200 mg

Green tea contributes antioxidant compounds, while L-carnitine participates in cellular energy transport and niacin in energy reactions. Those functions provide a biological connection to aging, but the supplied findings offer limited support for preserving function in unselected adults.

How this product is rated for Longevity

Ingredient fit41

1 assessed ingredient relate to healthy aging, alongside 8 other active ingredients (Calcium, Chromium, Coleus, Garcinia, Iodine, Uva Ursi, Vitamin B5, Vitamin B6). The product’s broader uses also affect its focus. The assessed amounts provide partial support relative to the saved comparison amounts; any undisclosed amount cannot add dose support.
Goal fit
1 assessed ingredient relate to healthy aging, alongside 8 other active ingredients (Calcium, Chromium, Coleus, Garcinia, Iodine, Uva Ursi, Vitamin B5, Vitamin B6). The product’s broader uses also affect its focus.
Dose adequacy
The assessed amounts provide partial support relative to the saved comparison amounts; any undisclosed amount cannot add dose support.

Pathways40

The strongest saved support concerns antioxidant defence, with meaningful coverage. Only 1 of the 3 target functions reaches the saved coverage level.
Depth
The strongest saved support concerns antioxidant defence, with meaningful coverage.
Breadth
Only 1 of the 3 target functions reaches the saved coverage level.

Evidence82

Green Tea supplies the strongest saved evidence contribution at an assessed amount. The support remains subject to that ingredient’s preparation and population limits. The assessed ingredients at meaningful amounts match the preparations accepted in the saved assessment.
Evidence strength
Green Tea supplies the strongest saved evidence contribution at an assessed amount. The support remains subject to that ingredient’s preparation and population limits.
Studied preparation
The assessed ingredients at meaningful amounts match the preparations accepted in the saved assessment.

Formulation logic100

The assessed ingredients can contribute independently or have their required partner present. No configured ingredient conflict was identified in the supplied assessment. 1 of 1 assessed ingredients reach the saved minimum for a meaningful amount.
Partner coverage
The assessed ingredients can contribute independently or have their required partner present.
Conflicts
No configured ingredient conflict was identified in the supplied assessment.
Effective doses
1 of 1 assessed ingredients reach the saved minimum for a meaningful amount.
Study evidence
Green Tea Supportive 9 studies
Impact
Lower effect
C+ Ingredient FitF PathwaysD EvidenceA+ Formulation Logic
Iodine · 150 mcgVitamin B5 · 10 mg
Study evidence
Iodine Adverse 3 studies

Ingredients

IngredientAmount per servingScore
Calories
5 Calorie(s)
Total Carbohydrates
1 Gram(s)
Niacin (Niacinamide)
10 mg
Vitamin B6 (Pyridoxine Hydrochloride)
10 mg
Pantothenic Acid (D-Calcium Pantothenate)
10 mg
Calcium (Super CitriMax)
30 mg
Iodine (Kelp)
150 mcg 70
Chromium (Chromium Amino Acid Chelate)
200 mcg 78
ForsLean (extract of Coleus forskohlii, Forskolin)
125 mg
L-Carnitine (L-Carnitine Tartrate)
250 mg 73
Super Citrimax
375 mg
Green Tea extract (EGCG)
200 mg 34
Uva Ursi leaf extract
50 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
Each serving provides 150 mcg of iodine from a marine source. Its chemical form and detailed sourcing information are unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability34

The iodine has a marine origin, while its chemical form and detailed sourcing information are unknown.
Iodine Form & Bioavailability
The marine origin is recorded, but iodine’s chemical form is unknown, so its absorption characteristics cannot be assessed here.
Marine Source Purity & Sourcing
A marine source is recorded, but the saved facts do not establish organic status or a specified clean-water origin.

Dose, Safety & Label Transparency100

The recorded iodine amount is 150 mcg per serving and falls within the evaluation’s safety threshold.
Dosage Efficacy for Daily Support
Each serving provides 150 mcg of iodine. The evaluation considers this amount aligned with daily support.
Dosage Safety & Upper Limits
The 150 mcg serving amount is within the evaluation’s safety threshold.
Elemental Iodine Transparency
The iodine amount is recorded directly as 150 mcg per serving.

Value80

The whole-product serving costs about $0.25.
Price Per Effective Serving
The whole-product serving costs about $0.25.
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB Value
A serving provides 200 mcg chromium as chromium amino acid chelate, a substantial amount. The chelate is less specifically identified than some other chromium forms.
How this ingredient is rated

Active Ingredient Quality & Bioavailability72

Chromium is supplied as chromium amino acid chelate; the precise chelating compound is not known from the saved facts. The saved facts indicate a branded chromium source, although its name is not specified.
Chromium Chemical Form
The chromium amino acid chelate source is less specifically identified than some named chromium forms.
Branded & Trademarked Sources
The saved facts indicate a branded chromium source, although its name is not specified.

Dose, Safety & Label Transparency85

The serving provides 200 mcg chromium, a substantial amount. A separate source-compound weight is not available in the saved facts.
Elemental Chromium Dosage
The serving provides 200 mcg chromium, a substantial amount in this evaluation.
Label Transparency & Disclosure
The saved facts give 200 mcg chromium and identify the source form, without a separately available compound weight.

Value75

The estimated cost is $0.25 per 200 mcg chromium, based on the whole-product price.
Price per 200 mcg Chromium
The estimated cost is $0.25 per 200 mcg chromium, based on the whole-product price.
A+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyC Value
A serving provides 250 mg of L-carnitine. At that amount and the saved price, the cost is about $1.00 per gram of L-carnitine.
How this ingredient is rated

Active Ingredient Quality & Bioavailability100

The evaluation identifies a tartrate or fumarate family, but the saved facts do not specify which form. A branded carnitine source is indicated in the evaluation, but its name is not provided in the saved facts.
Chemical Form and Goal Alignment
The evaluation identifies a tartrate or fumarate family, but the saved facts do not specify which form.
Branded Material and Purity Standards
A branded carnitine source is indicated in the evaluation, but its name is not provided in the saved facts.

Dose, Safety & Label Transparency53

The saved serving amount is 250 mg of L-carnitine. The L-carnitine amount is recorded without a paired source-compound amount.
Elemental L-Carnitine Dosage
The saved serving amount is 250 mg of L-carnitine.
Elemental Yield Disclosure
The L-carnitine amount is recorded without a paired source-compound amount.

Value60

Based on the saved amount and price, the cost is about $1.00 per gram of L-carnitine.
Price per Gram of Elemental L-Carnitine
Based on the saved amount and price, the cost is about $1.00 per gram of L-carnitine.
Report alternatives

Sources

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

  1. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  2. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  3. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  4. Green tea and coffee intake and risk of cognitive decline in older adults: the National Institute for Longevity Sciences, Longitudinal Study of Aging.
    Shirai Y; Kuriki K; Otsuka R; Kato Y; Nishita Y; Tange C; Tomida M; Imai T; Ando F; Shimokata H · Public health nutrition · 2021
    Cohort study1,305 participantsLongevity forGreen Tea
  5. Associations of green tea, coffee, and soft drink consumption with longitudinal changes in leukocyte telomere length.
    Sohn I; Shin C; Baik I · Scientific reports · 2023
    Cohort study1,952 participantsLongevity forGreen Tea
  6. Can teatime increase one's lifetime?
    Nakachi K; Eguchi H; Imai K · Ageing research reviews · 2003
    Cohort studyLongevity forGreen Tea
  7. Influences of tea consumption on self-rated health and life satisfaction among older adults: Evidence from the CLHLS.
    Zou M; Sun C; Yang M; Li C; Wang S; Zheng D; Wang J; Yu L; Sun L; Wang Y; Chen H; Zeng Y · PsyCh journal · 2025
    Cohort study78,345 participantsLongevity forGreen Tea
  8. Double-blinded, placebo-controlled trial of green tea extracts in the clinical and histologic appearance of photoaging skin.
    Chiu AE; Chan JL; Kern DG; Kohler S; Rehmus WE; Kimball AB · Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] · 2005
    Randomized trial40 participantsLongevity forGreen Tea
  9. Elevated intakes of supplemental chromium improve glucose and insulin variables in individuals with type 2 diabetes.
    Anderson RA; Cheng N; Bryden NA; Polansky MM; Cheng N; Chi J; Feng J · Diabetes · 1997
    Randomized trial180 participantsMetabolism Support forChromium
  10. Chromium Supplementation and the Effects on Metabolic Status in Women with Polycystic Ovary Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Jamilian M; Asemi Z · Annals of nutrition & metabolism · 2016
    Randomized trial64 participantsMetabolism Support forChromium
  11. A Comprehensive insight into the effect of chromium supplementation on oxidative stress indices in diabetes mellitus: A systematic review.
    Kooshki F; Tutunchi H; Vajdi M; Karimi A; Niazkar HR; Shoorei H; Pourghassem Gargari B · Clinical and experimental pharmacology & physiology · 2024
    Systematic review33 studies pooledMetabolism Support forChromium
  12. Comparison of nutritional supplements in improving glycolipid metabolism and endocrine function in polycystic ovary syndrome: a systematic review and network meta-analysis.
    Hu X; Wang W; Su X; Peng H; Tan Z; Li Y; Huang Y · PeerJ · 2023
    Meta-analysis2,362 participants41 studies pooledMetabolism Support forChromium
  13. [Chromium supplementation in patients with type 2 diabetes and high risk of type 2 diabetes: a meta-analysis of randomized controlled trials].
    San Mauro-Martin I; Ruiz-León AM; Camina-Martín MA; Garicano-Vilar E; Collado-Yurrita L; Mateo-Silleras Bd; Redondo Del Río Mde P · Nutricion hospitalaria · 2017
    Meta-analysis13 studies pooledMetabolism Support forChromium
  14. Effect of green tea on glucose control and insulin sensitivity: a meta-analysis of 17 randomized controlled trials.
    Liu K; Zhou R; Wang B; Chen K; Shi LY; Zhu JD; Mi MT · The American journal of clinical nutrition · 2013
    Meta-analysis1,133 participants17 studies pooledMetabolism Support forGreen Tea
  15. Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.
    Venables MC; Hulston CJ; Cox HR; Jeukendrup AE · The American journal of clinical nutrition · 2008
    Randomized trial23 participantsMetabolism Support forGreen Tea
  16. Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans.
    Dulloo AG; Duret C; Rohrer D; Girardier L; Mensi N; Fathi M; Chantre P; Vandermander J · The American journal of clinical nutrition · 1999
    Randomized trial10 participantsMetabolism Support forGreen Tea
  17. A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal and Class I Obese Women.
    Rondanelli M; Gasparri C; Perna S; Petrangolini G; Allegrini P; Fazia T; Bernardinelli L; Cavioni A; Mansueto F; Oberto L; Patelli Z; Tartara A; Riva A · Nutrients · 2022
    Randomized trial28 participantsMetabolism Support forGreen Tea
  18. Epigallocatechin gallate alleviates non-alcoholic fatty liver disease through the inhibition of the expression and activity of Dipeptide kinase 4.
    Yang M; Yan R; Sha R; Wang X; Zhou S; Li B; Zheng Q; Cao Y · Clinical nutrition (Edinburgh, Scotland) · 2024
    Randomized trialMetabolism Support forGreen Tea
  19. Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
    Herter-Aeberli I; Cherkaoui M; El Ansari N; Rohner R; Stinca S; Chabaa L; von Eckardstein A; Aboussad A; Zimmermann MB · The Journal of nutrition · 2015
    Randomized trial163 participantsMetabolism Support forIodine
  20. Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
    Zimmermann MB; Adou P; Torresani T; Zeder C; Hurrell RF · European journal of clinical nutrition · 2000
    Single-arm trial51 participantsMetabolism Support forIodine