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C Complete Powder

4.6
★ ★ ★ ★ ★
(152 ratings)
Vitamin C 1000 mg
Rutin 10 mg
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Score64
A substantial, partly buffered vitamin C powder with small flavonoid additions. Confusing form quantities and an unnamed food blend are major transparency weaknesses.
How scoring works
Powder
Quantity:84 Gram(s) • (30 servings)
Goals:
Immunity
Skin Health
General Health
Anti-Inflammatory Support

Score 64

A substantial, partly buffered vitamin C powder with small flavonoid additions. Confusing form quantities and an unnamed food blend are major transparency weaknesses.
How scoring works
$35.99($1.19 per serving)
iHerb
$ 35.99
Vitacost
$ 35.99
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Analysis

The powder combines plain ascorbic acid with calcium and potassium ascorbates, giving vitamin C support with some buffering. Quercetin and rutin add a small flavonoid component, while the food blend could broaden the formula if its composition were disclosed.

The label repeats the same vitamin C quantity across several forms without clarifying how they contribute to the total serving. Quercetin and rutin are modest, and the unnamed food blend prevents a meaningful assessment of its active ingredients.

The powder may suit adults who prefer mixing vitamin C into a drink and want a partly buffered formula. Shoppers who value exact form breakdowns or targeted flavonoid amounts will find the disclosure too weak.

Who is it for
  • Adults who prefer a mixable vitamin C powder
  • People seeking partial mineral buffering
Best for
  • Drink-based vitamin C supplementation
  • Users who dislike capsules

Pros

  • Substantial vitamin C foundation
  • Includes multiple ascorbate forms
  • Powder allows flexible mixing
  • Adds quercetin and rutin

Cons

  • Vitamin C form breakdown is ambiguous
  • Food blend contents are not disclosed
  • Quercetin and rutin are lightly dosed
  • Serving value is weak for the disclosure level

Warnings

  • A high vitamin C serving may cause stomach upset or loose stools, even with partial buffering.
  • People prone to calcium-oxalate kidney stones should avoid combining it with other high-dose vitamin C products.
  • The unnamed food blend may be unsuitable for people who need to screen ingredients closely for allergies or sensitivities.

Nutrient quality

77 High impact

The mixed ascorbate approach provides a substantial and partly buffered vitamin C dose. Tiny flavonoids and an unnamed food blend add little dependable depth.

Ingredient transparency

54 Moderate impact

The main nutrient amount is clear, but the split among forms and the contents of the food blend are not. Inactive ingredients and complete usage directions are also absent.

Customer satisfaction

66 High impact

The aggregate rating is strong and supported by a useful feedback volume. Detailed comments are not supplied, so recurring experiences cannot be assessed.

Value for money

59 Moderate impact

A substantial mixed-form serving offers moderate value. The hidden food blend and token flavonoids make the formula less competitive than clearer vitamin C powders.

Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A+ Goal FitA- Strength of SupportB CoverageB+ Formula Quality
Vitamin C · 1000 mg

Vitamin C provides direct antioxidant support for normal immune-cell function. The serving is meaningful enough to anchor a focused immunity formula.

Ascorbic acid and mineral ascorbates are named, but their split and potassium contribution are not fully disclosed. Quercetin and rutin are modest additions, while the hidden food blend reduces dose transparency.

Study evidence
Vitamin C Supportive 53 studies
Skin Health
Skin Health
Impact
High effect
B Goal FitA- Strength of SupportC- CoverageC+ Formula Quality
Vitamin C · 1000 mg

Vitamin C directly supports collagen synthesis and antioxidant defense. The substantial amount provides focused support for skin structure. Mixed mineral ascorbates provide partial buffering, while quercetin and rutin add small antioxidant amounts.

The formula does not add collagen peptides, hydration support, or lipid-barrier nutrients. The high vitamin C amount may cause diarrhea or abdominal cramping in sensitive users.

Study evidence
Vitamin C Supportive 53 studies
General Health
General Health
Impact
High effect
B+ Goal FitB+ Strength of SupportC- CoverageC Formula Quality
Vitamin C · 1000 mg

Vitamin C from acidic and mineral ascorbate forms supports antioxidant, immune, and collagen functions with partial buffering. The main vitamin amount is substantial and calcium is separately disclosed.

The split among vitamin C forms and the potassium contribution are unclear. Low quercetin and rutin amounts plus a large unnamed food blend create uncertain breadth rather than dependable added support.

Study evidence
Vitamin C Supportive 56 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
C Goal FitB+ Strength of SupportD+ CoverageC Formula Quality
Vitamin C · 1000 mg

A substantial mixed-form vitamin C amount supports antioxidant defenses relevant to inflammatory balance. Quercetin and rutin add complementary flavonoids, but their amounts are too small for targeted anti-inflammatory effects.

Mineral ascorbates partly buffer the powder, although each vitamin C form’s contribution is not separated. The food blend and low-dose flavonoids create more label breadth than physiological depth.

Study evidence
Rutin Supportive 6 studies
Vitamin C Supportive 50 studies
Vision Support
Vision Support
Impact
Moderate effect
C+ Goal FitB- Strength of SupportD+ CoverageC- Formula Quality
Vitamin C · 1000 mg

Vitamin C supports lens and retinal antioxidant defenses, while rutin may add limited capillary support. The powder still lacks macular carotenoids, zinc, copper, vitamin E, and omega-3 fats.

The vitamin C amount is meaningful, but rutin and quercetin are modest and a food blend hides its components. Several ascorbate forms improve variety without proving stronger ocular delivery.

Study evidence
Rutin Not classified 1 study
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid, Calcium Ascorbate, Potassium Ascorbate)
 1000 mg
Calcium (Calcium Ascorbate)
 95 mg
Quercetin Dihydrate
20 mg
Rutin
10 mg
Nourishing Food Blend
500 mg
Adults 18–50 Vegetarian
Report overview
Vitamin C (Ascorbic Acid, Calcium Ascorbate, Potassium Ascorbate) · 1000 mg OverallScore65
C Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value

The 1,000 mg vitamin C dose combines ascorbic acid with mineral ascorbates for a partly buffered profile. Calcium disclosure improves clarity, but the potassium contribution and the split among forms remain uncertain. The powder is relatively costly per gram and may suit people who value a mixed-form formula more than low-cost delivery.

View ingredientView products
Rutin · 10 mg OverallScore30
F Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value

The clearly disclosed rutin amount is easy to verify, but it is far below the range used for targeted vascular support. No botanical source, purity level, or standardized form is identified, limiting confidence in active quality. The formula is primarily a vitamin C powder, so it offers poor value for someone specifically seeking rutin.

View ingredientView products
Loading alternative details
82 Performance

Ester-C 500 mg With Citrus Bioflavoinds

American Health
<p>The ingredient profile is well aligned with the original’s vitamin C and rutin focus, supplying 1000 mg of vitamin C as Ester-C Calcium Ascorbate with calcium and citrus bioflavonoids. Both vitamin C and rutin are disclosed, so it covers the original’s two named collections with clearly identified ingredients.</p>
79 Performance

AlphaSorb-C 500

NOW
<p>The ingredient profile is well aligned with the original’s vitamin C and rutin focus, supplying 500 mg of vitamin C as Threonic Acid enhanced buffered Calcium Ascorbate with calcium, citrus bioflavonoids, rose hips and 25 mg of rutin. Both vitamin C and rutin are disclosed, so it covers the original’s two named collections with clearly identified ingredients.</p>
70 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
<p>The ingredient profile is well aligned with the original’s vitamin C and rutin focus, supplying 1000 mg of vitamin C as Ester-C with calcium and citrus bioflavonoids. The buffered vitamin C form and disclosed bioflavonoid complex create a focused formula, but no separate rutin amount is given, so rutin coverage is less direct than in the original.</p>
89 Budget

Pure Buffered Calcium Ascorbate

NOW
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 890 mg of vitamin C as Calcium Ascorbate with calcium. The 890 mg amount is lower than the original's 1000 mg serving, so the trade-off is less vitamin C per serving.</p>
87 Budget

100% Pure Vitamin C Powder

Swanson Premium Brand
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 1000 mg of vitamin C as Ascorbic Acid. The vitamin C amount matches or exceeds the original's 1000 mg serving.</p>
85 Budget

Gold C Vitamin C 1000 mg

California Gold Nutrition
<p>A lower cost per serving makes this a practical budget alternative, while it supplies 1000 mg of vitamin C as Ascorbic Acid. The vitamin C amount matches or exceeds the original's 1000 mg serving.</p>
89 Value

Ester-C 500 mg With Citrus Bioflavoinds

American Health
<p>Strong serving value is paired with 1000 mg of vitamin C as Ester-C Calcium Ascorbate with calcium and citrus bioflavonoids. It matches or exceeds the original’s vitamin C amount and adds disclosed bioflavonoids, balancing cost-effectiveness with a useful ingredient profile.</p>
83 Value

Pure Buffered Magnesium Ascorbate

NOW
<p>Strong serving value is paired with 820 mg of vitamin C as Magnesium Ascorbate with magnesium. It uses a lower vitamin C amount than the original and keeps the active formula clearly disclosed, balancing cost-effectiveness with a useful ingredient profile.</p>
84 Value

Sodium Ascorbate Capsules

NutriBiotic Immunity
<p>Strong serving value is paired with 850 mg of vitamin C as Sodium Ascorbate. It uses a lower vitamin C amount than the original and keeps the active formula clearly disclosed, balancing cost-effectiveness with a useful ingredient profile.</p>
Report alternatives

Sources

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

  1. The effects of rutin flavonoid supplement on glycemic status, lipid profile, atherogenic index of plasma, brain-derived neurotrophic factor (BDNF), some serum inflammatory, and oxidative stress factors in patients with type 2 diabetes mellitus: A double-blind, placebo-controlled trial.
    Bazyar H; Moradi L; Zaman F; Zare Javid A · Phytotherapy research : PTR · 2023
    Randomized trial50 participantsAnti-Inflammatory Support forRutin
  2. Rutin ameliorates inflammation and improves metabolic function: A comprehensive analysis of scientific literature.
    Muvhulawa N; Dludla PV; Ziqubu K; Mthembu SXH; Mthiyane F; Nkambule BB; Mazibuko-Mbeje SE · Pharmacological research · 2022
    Systematic reviewAnti-Inflammatory Support forRutin
  3. Rutin-loaded chitosan microspheres: Characterization and evaluation of the anti-inflammatory activity.
    Cosco D; Failla P; Costa N; Pullano S; Fiorillo A; Mollace V; Fresta M; Paolino D · Carbohydrate polymers · 2018
    OtherAnti-Inflammatory Support forRutin
  4. Oral enzyme combination therapy reduces systemic inflammation, urinary CTXII and pain in knee osteoarthritis: a proof-of-mechanism, randomised, crossover, double-blind, placebo-controlled trial.
    Henrotin Y; Pap T; Lieten S; Badot V; Dubuc JE; Urbin-Choffray D; von Eynatten M; Johansen OE; Rau S; Brabants K · RMD open · 2025
    Randomized trial45 participantsAnti-Inflammatory Support forRutin
  5. The Impact of the Combination of Proteolytic Enzyme and Rutin on the Post-operative Management of Inflammation: A Randomized, Controlled, Double-Blind, Comparative Clinical Trial
    Rathi PC, Rathi CL, Risbud SP, Ganu GP · Cureus · 2024
    Randomized trial65 participantsAnti-Inflammatory Support forRutin
  6. Efficacy of Vitamin C as Glucocorticoid Substitute for Reducing Pain and Inflammation After Total Hip Arthroplasty: A Randomized Controlled Trial.
    Jiang W; Xu H; Jiang X; Zhan Y; Ju Y; Xie J; Huang Z; Huang Q; Pei F · The Journal of bone and joint surgery. American volume · 2025
    Randomized trial107 participantsAnti-Inflammatory Support forVitamin C
  7. The Impact of Vitamin C on Analgesic, Anti-inflammatory, and Hemostatic Outcomes After Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.
    Moftakhari Hajimirzaei S; Bagherzadeh Cham M; Dolikhani M; Tabatabaee SM; Ebrahimpour A · The archives of bone and joint surgery · 2026
    Meta-analysis1,162 participants10 studies pooledAnti-Inflammatory Support forVitamin C
  8. The impact of vitamin C supplementation on the perioperative outcomes after total hip and knee arthroplasty: a systematic review and meta-analysis.
    Liu X; Guo J; Li Y; Yang Y; Liu M; Gao Q; Yang Y; Wu X; Yue C · BMC musculoskeletal disorders · 2026
    Meta-analysis852 participants8 studies pooledAnti-Inflammatory Support forVitamin C
  9. Therapeutic Impact of Ascorbic Acid on Oral and Periodontal Tissues: A Systematic Literature Review.
    Ruzijevaite G; Acaite E; Jagelaviciene E · Medicina (Kaunas, Lithuania) · 2025
    Systematic review811 participants17 studies pooledAnti-Inflammatory Support forVitamin C
  10. Oral vitamin C administration reduces early recurrence rates after electrical cardioversion of persistent atrial fibrillation and attenuates associated inflammation.
    Korantzopoulos P; Kolettis TM; Kountouris E; Dimitroula V; Karanikis P; Pappa E; Siogas K; Goudevenos JA · International journal of cardiology · 2005
    Randomized trial44 participantsAnti-Inflammatory Support forVitamin C
  11. Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies.
    Aune D; Keum N; Giovannucci E; Fadnes LT; Boffetta P; Greenwood DC; Tonstad S; Vatten LJ; Riboli E; Norat T · The American journal of clinical nutrition · 2019
    Meta-analysis69 studies pooledGeneral Health forVitamin C
  12. Scientific Opinion on the substantiation of a health claim related to vitamin C and increasing non haem iron absorption pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusGeneral Health forVitamin C
  13. Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
    Sotomayor CG; Eisenga MF; Gomes Neto AW; Ozyilmaz A; Gans ROB; Jong WHA; Zelle DM; Berger SP; Gaillard CAJM; Navis GJ; Bakker SJ · Nutrients · 2018
    Cohort study598 participantsGeneral Health forVitamin C
  14. Associations of Serum Biomarkers of Fruit and Vegetable Intake With the Risk of Cause-Specific Mortality and All-Cause Mortality: A National Prospective Cohort Study.
    Pu L; Zhang R; Wang X; Zhao T; Sun H; Han L · Frontiers in nutrition · 2022
    Cohort study12,530 participantsGeneral Health forVitamin C
  15. Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition.
    Khaw KT; Bingham S; Welch A; Luben R; Wareham N; Oakes S; Day N · Lancet (London, England) · 2001
    Cohort study19,496 participantsGeneral Health forVitamin C
  16. Vitamin C and contribution to the normal function of the immune system: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusImmunity forVitamin C
  17. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
    Sun L; Zhao JH; Fan WY; Feng B; Liu WW; Chen RQ; Ban C; Dang AG; Wang M; Luo KT; Zhou GY; Yu FF; Ba Y · Nutrition reviews · 2024
    Meta-analysis2,334 participants14 studies pooledImmunity forVitamin C
  18. Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
    Abioye AI; Bromage S; Fawzi W · BMJ global health · 2021
    Meta-analysisImmunity forVitamin C
  19. New evidence for antioxidant properties of vitamin C.
    Vojdani A; Bazargan M; Vojdani E; Wright J · Cancer detection and prevention · 2001
    Randomized trial20 participantsImmunity forVitamin C
  20. Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
    Calder PC; Kreider RB; McKay DL · Nutrients · 2025
    Systematic review13 studies pooledImmunity forVitamin C
  21. Evaluation of the anti-wrinkle effect of an ascorbic acid-loaded dissolving microneedle patch via a double-blind, placebo-controlled clinical study.
    Lee C; Yang H; Kim S; Kim M; Kang H; Kim N; An S; Koh J; Jung H · International journal of cosmetic science · 2017
    Randomized trial23 participantsSkin Health forVitamin C
  22. Comparative Study on the Outcome of Periorbital Wrinkles Treated with Laser-Assisted Delivery of Vitamin C or Vitamin C Plus Growth Factors: A Randomized, Double-blind, Clinical Trial.
    Machado BHB; Frame J; Zhang J; Najlah M · Aesthetic plastic surgery · 2021
    Randomized trial149 participantsSkin Health forVitamin C
  23. Randomized trial of topical ascorbic acid in DMSO versus imiquimod for the treatment of basal cell carcinoma.
    Burke B; Bailie JE · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Randomized trial25 participantsSkin Health forVitamin C
  24. Vitamin C improves healing of foot ulcers: a randomised, double-blind, placebo-controlled trial.
    Gunton JE; Girgis CM; Lau T; Vicaretti M; Begg L; Flood V · The British journal of nutrition · 2022
    Randomized trial16 participantsSkin Health forVitamin C
  25. Dietary nutrient intakes and skin-aging appearance among middle-aged American women.
    Cosgrove MC; Franco OH; Granger SP; Murray PG; Mayes AE · The American journal of clinical nutrition · 2007
    Cross-sectional study4,025 participantsSkin Health forVitamin C
  26. A randomized, double-masked study on the treatment of retinal vein occlusion with troxerutin
    Glacet-Bernard A, Coscas G, Chabanel A, Zourdani A, Lelong F, Samama MM · American Journal of Ophthalmology · 1994
    Randomized trial53 participantsVision Support forRutin
  27. Role of Oral Vitamin 'C' on Astigmatic Errors in Phacoemulsification.
    Mohan S; Sah K; Khattri M; Ahmad L; Sachan SK · Current eye research · 2021
    Randomized trial400 participantsVision Support forVitamin C
  28. Ascorbic acid metabolites are involved in intraocular pressure control in the general population.
    Hysi PG; Khawaja AP; Menni C; Tamraz B; Wareham N; Khaw KT; Foster PJ; Benet LZ; Spector TD; Hammond CJ · Redox biology · 2019
    Observational studyVision Support forVitamin C
  29. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C
  30. Dietary n-3 Fatty Acid, α-Tocopherol, Zinc, vitamin D, vitamin C, and β-carotene are Associated with Age-Related Macular Degeneration in Japan.
    Aoki A; Inoue M; Nguyen E; Obata R; Kadonosono K; Shinkai S; Hashimoto H; Sasaki S; Yanagi Y · Scientific reports · 2017
    Case-control study530 participantsVision Support forVitamin C
  31. Adherence to a Mediterranean diet, lifestyle and age-related macular degeneration: the Coimbra Eye Study - report 3.
    Raimundo M; Mira F; Cachulo MDL; Barreto P; Ribeiro L; Farinha C; Laíns I; Nunes S; Alves D; Figueira J; Merle BM; Delcourt C; Santos L; Silva R · Acta ophthalmologica · 2019
    Case-control study883 participantsVision Support forVitamin C