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Optimal Liposomal Vitamin C Lemon Zest 1000 mg

4.9
★ ★ ★ ★ ★
(344 ratings)
Vitamin C 1000 mg
Product Image
Score74
A well-specified liposomal vitamin C liquid with strong potency and partial buffering. Its advanced delivery is balanced by premium cost and the extra handling of a liquid.
How scoring works
Liquid
Quantity:5 Liquid(s) • (30 servings)
Goals:
General Health
Skin Health
Anti-Inflammatory Support
Immunity
Vision Support

Score 74

A well-specified liposomal vitamin C liquid with strong potency and partial buffering. Its advanced delivery is balanced by premium cost and the extra handling of a liquid.
How scoring works
$38.00($1.26 per serving)
Pure Formulas
$ 38.00
iHerb
$ 0.00
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Analysis

The 1,000 mg serving uses both ascorbic acid and sodium ascorbate, providing substantial antioxidant and immune support with partial buffering. A 400 mg phospholipid complex supplies the liposomal delivery framework and distinguishes it from ordinary tablets.

Liquid dosing may suit people who have difficulty swallowing pills, and the sunflower-based lipid system is clearly identified. The formula still contains an acidic component and some carbohydrate, so it is not a completely neutral or minimal product.

Premium delivery comes with a high cost for each serving and requires more careful storage and measuring than capsules. It best fits users who specifically value liposomal delivery enough to accept those inconveniences.

Who is it for
  • Adults specifically seeking liposomal vitamin C
  • People who have trouble swallowing tablets
  • Users willing to pay more for an advanced delivery system
Best for
  • High-potency immune support
  • Antioxidant support
  • Users prioritizing delivery technology

Pros

  • Clearly disclosed liposomal phospholipid complex
  • High-potency vitamin C serving
  • Partially buffered active blend

Cons

  • Premium cost per serving
  • Liquid requires measuring and careful handling
  • Contains residual acidity and carbohydrate

Warnings

  • The high vitamin C serving may cause digestive upset or loose stools in sensitive users.
  • The liquid still contains ascorbic acid and may bother acid-sensitive stomachs.
  • Users with sunflower allergy should avoid the sunflower-oil phospholipid complex.

Nutrient quality

87 Highest impact

Sunflower phospholipids and sodium ascorbate provide enhanced delivery with partial buffering. The substantial vitamin C serving is sufficient for focused supplementation.

Ingredient transparency

84 Highest impact

All listed active amounts are disclosed without a proprietary blend. Complete directions and inactive-ingredient details remain incomplete.

Customer satisfaction

72 High impact

The aggregate rating and its volume provide a favorable top-level signal. Missing experience details prevent assessment of repeated complaints or purpose-specific satisfaction.

Value for money

48 Lower impact

Advanced delivery improves quality, but the serving remains expensive within the category. Comparable products can provide similar vitamin C support more efficiently.

Report analysis

Goals

General Health
General Health
Impact
Highest effect
A Goal FitB+ Strength of SupportB CoverageA Formula Quality
Vitamin C · 1000 mg

Vitamin C provides foundational antioxidant, immune, and collagen support at a substantial stated amount. A sunflower phospholipid complex supports the intended liposomal delivery and adds a clear formulation rationale.

The ingredient data list the same vitamin C amount beside both ascorbic acid and sodium ascorbate, making the total contribution somewhat ambiguous. A large vitamin C serving can cause stomach upset or loose stools in sensitive users.

Study evidence
Vitamin C Supportive 56 studies
Skin Health
Skin Health
Impact
Highest effect
A- Goal FitB+ Strength of SupportB- CoverageA Formula Quality
Vitamin C · 1000 mg

Vitamin C supplies a strong collagen-synthesis cofactor and antioxidant pathway relevant to skin structure and environmental stress. A sunflower phospholipid complex may improve delivery compared with plain ascorbic acid.

The formula does not provide collagen peptides, hydration actives, or barrier lipids, so its skin coverage remains supportive rather than comprehensive. The large vitamin C serving may cause stomach upset or diarrhea in sensitive users.

Study evidence
Vitamin C Supportive 53 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
Highest effect
B- Goal FitA Strength of SupportC+ CoverageA Formula Quality
Vitamin C · 1000 mg

Vitamin C provides substantial antioxidant support, and the phospholipid complex may improve delivery. The mix of ascorbic acid and sodium ascorbate may also be gentler than an entirely acidic formula.

The label presentation appears to list the same vitamin C amount under two forms, leaving the total contribution somewhat ambiguous. Apart from that disclosure issue, the formula is focused and relevant to oxidative-stress support.

Study evidence
Vitamin C Supportive 50 studies
Immunity
Immunity
Impact
High effect
A Goal FitB Strength of SupportC CoverageB+ Formula Quality
Vitamin C · 1000 mg

Vitamin C supports foundational antioxidant defenses, collagen formation, and normal immune function. The formula supports antioxidant, collagen, and immune pathways but does not fill a broad range of nutrient gaps.

The label presents a substantial 1,000 mg vitamin C serving suited to focused antioxidant support. The label clearly identifies ascorbic acid, but the unbuffered form offers no absorption or stomach-comfort advantage.

Study evidence
Vitamin C Supportive 53 studies
Vision Support
Vision Support
Impact
High effect
C Goal FitA- Strength of SupportD+ CoverageB Formula Quality
Vitamin C · 1000 mg

Vitamin C provides meaningful antioxidant support for the lens and retina and is part of established multi-nutrient vision formulas. Used alone, it cannot supply macular pigments, retinal omega-3s, vitamin E, or zinc.

The clearly disclosed amount is substantial, and the phospholipid complex may improve delivery. The label repeats the full vitamin C amount across two forms, which leaves the contribution from each form unclear.

Study evidence
Vitamin C Disputed 24 studies

Ingredients

IngredientAmount per serving
Calories
10 Calorie(s)
Total Carbohydrates
2 Gram(s)
Vitamin C (Ascorbic Acid, Sodium Ascorbate)
 1000 mg
Sodium (Sodium Ascorbate)
 90 mg
Phosphatidylcholine and Phosphatidylethanolamine Complex (non-GMO Sunflower Oil)
 400 mg
Gluten Free Adults 18–50 Dairy Free Children 4+
Report overview
Vitamin C (Ascorbic Acid, Sodium Ascorbate) · 1000 mg OverallScore79
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value

Liposomal delivery and a 1,000 mg amount provide strong form quality and well-targeted potency. The mixed ascorbic acid and sodium ascorbate base is only partially buffered, while the non-GMO sunflower lipid system keeps the ingredient design clean. The premium liquid is expensive per active amount despite its advanced delivery.

View ingredientView products
Loading alternative details
89 Performance

C-500 Calcium Ascorbate-C

NOW
The buffered vitamin C form may be easier to tolerate than the original plain ascorbic acid formula. Its 500 mg of calcium ascorbate is buffered and includes 55 mg of calcium; the 10 mg bioflavonoid addition is modest.
88 Performance

Buffered Gold C

California Gold Nutrition
The buffered vitamin C form may be easier to tolerate than the original plain ascorbic acid formula. Its 1,000 mg of sodium ascorbate is buffered and simply formulated, with 130 mg of sodium clearly disclosed.
88 Performance

Sodium Ascorbate Capsules

NutriBiotic Immunity
The buffered vitamin C form may be easier to tolerate than the original plain ascorbic acid formula. Its capsules provide 850 mg of buffered sodium ascorbate with a clearly disclosed 100 mg sodium contribution.
85 Budget

C-500 With Rose Hips

NOW
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 500 mg of ascorbic acid with 40 mg of rose hips, although the vitamin C remains unbuffered.
83 Budget

C 500 mg

21st Century
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 500 mg of ascorbic acid with 30 mg of calcium in a basic, clearly dosed formula.
85 Budget

Gold C Vitamin C 1000 mg

California Gold Nutrition
The supplied serving-cost data indicates a less expensive way to obtain a comparable vitamin C serving. Compared with the original buffered vitamin C formula, it supplies 1,000 mg of plain ascorbic acid without extra actives, favoring simplicity rather than buffering.
87 Value

100% Pure Vitamin C Powder

Swanson Premium Brand
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its powder provides 1,000 mg of ascorbic acid with flexible measuring, though the acidic form may not suit every user.
87 Value

C 500 mg

Mason Natural
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its single active is 500 mg of ascorbic acid, making the label easy to assess despite the lack of buffering.
88 Value

Sodium Ascorbate

NutriBiotic Immunity
The combination of a focused ingredient list and efficient supply makes it a stronger value candidate than the original buffered vitamin C formula. Its 1,100 mg of sodium ascorbate is fully buffered, but the disclosed 120 mg of sodium matters for sodium-restricted users.
Report alternatives

Sources

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

  1. 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
  2. Serum vitamin C and spinal pain: a nationwide study.
    Dionne CE; Laurin D; Desrosiers T; Abdous B; Le Sage N; Frenette J; Mondor M; Pelletier S · Pain · 2017
    Cross-sectional study4,742 participantsGeneral Health forVitamin C
  3. 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
  4. Immunocompetence and oxidant defense during ascorbate depletion of healthy men.
    Jacob RA; Kelley DS; Pianalto FS; Swendseid ME; Henning SM; Zhang JZ; Ames BN; Fraga CG; Peters JH · The American journal of clinical nutrition · 1992
    Clinical trial8 participantsImmunity forVitamin C
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. Nutritional modulation of cataract.
    Weikel KA; Garber C; Baburins A; Taylor A · Nutrition reviews · 2014
    Narrative reviewVision Support forVitamin C
  26. 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
  27. 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