Lutein, Vitamin C & Zinc

Lutein, vitamin C and zinc reference formula at example amounts of 250 mcg, 60 mg and 11 mg per serving, developed as a tablet or softgel.

Lutein, Vitamin C & Zinc is a reference formula for brands building a three-active eye nutrition tablet around example amounts of 250 mcg of lutein, 60 mg of vitamin C and 11 mg of zinc per serving. The development work sits with dose uniformity of a microgram-level carotenoid, the pairing of acidic ascorbic acid with a solid zinc salt in one unit, and the zinc salt that sets the input weight.

Tablet is the lead format because three solid actives compress into one unit, and a softgel with an oil-based suspension fill is the alternative that suits the carotenoid. The amounts are examples that the brand moves for its market, and the multivitamin and mineral base around the three actives is set in sampling.

Ingredient Composition

IngredientPer ServingRaw Material FormAlternative Form (same amount of active)
Lutein250 mcg (example amount)Free lutein from marigold extract 10–20% lutein, as a dispersible powder or beadlet; specification 250 mcg lutein per servingLutein in an oil suspension for softgels, or a different grade of marigold extract, with the input recalculated to 250 mcg of lutein
Vitamin C60 mg (example amount)Ascorbic acid, specified on vitamin C content; 60 mg vitamin C per servingSodium or calcium ascorbate, or a natural vitamin C source such as acerola cherry extract or camu camu extract, with the input recalculated to 60 mg of vitamin C
Zinc11 mg (example amount)Zinc oxide, specified on elemental zinc content; 11 mg zinc per servingZinc bisglycinate, gluconate, citrate or picolinate, with the input recalculated to 11 mg of elemental zinc; the salt that suits the format is chosen in sampling

Amounts are stated as mcg of free lutein (C40H56O2, 568.9 g/mol; PubChem CID 5281243), mg of vitamin C as ascorbic acid (C6H8O6, 176.12 g/mol; CID 54670067) and mg of elemental zinc (Zn, 65.4 g/mol; CID 23994). Zinc content by weight of anhydrous zinc oxide is 80.3% (CID 3007857, 81.4 g/mol). The reference label states lutein as 0.25 mg, which is 250 mcg; the lutein ester content of a marigold grade and the hydrate state of a purchased salt are set with the supplier.

Intended Benefits & Formula Rationale

This formula is designed for products positioned around eye nutrition and macular nutrition. Lutein, vitamin C and zinc are included together as the carotenoid, antioxidant vitamin and trace mineral that appear in the research on age-related macular degeneration (AMD).

Intended Benefit DirectionKey IngredientsFormulation Rationale
Eye and macular nutritionVitamin C, ZincIncluded because the AREDS trial of high-dose vitamins C and E, beta carotene and zinc reported a statistically significant odds reduction for development of advanced AMD with antioxidants plus zinc (OR 0.72) in people with AMD risk features [1], and the 2023 Cochrane review reports moderate-certainty evidence of less progression to late AMD with antioxidant vitamins in people with AMD (OR 0.72) [3]. The trial amounts (vitamin C 500 mg, zinc 80 mg) are higher than the example amounts here. Evidence: Referenced
Carotenoid nutrition for the eyeLuteinIncluded as the carotenoid studied in AREDS2, where adding lutein (10 mg) and zeaxanthin (2 mg) to the AREDS formulation showed no statistically significant further reduction in progression to advanced AMD (HR 0.90) [2]; the Cochrane review rates the evidence on lutein and zeaxanthin as low-certainty, with a similar or slightly smaller risk of progression (RR 0.94) [3]. Evidence: Mixed
Essential trace mineral nutritionZincIncluded because zinc is required by more than 300 enzymes and more than 1000 transcription factors, and a review describes its use in the management of age-related dry-type macular degeneration [4]. Evidence: Referenced

The amounts are examples, and the combination is a design choice that the brand and its market review confirm. In AREDS2, lowering the zinc dose within the AREDS formulation showed no apparent effect on progression to advanced AMD [2], so the zinc amount is one the brand sets for its market rather than a fixed value.

Available Formats

The lutein, vitamin C and zinc reference formula is built for a tablet version and a softgel version; unit counts per serving are design choices that the brand can adjust.

FormatUnitPer ServingPack SizeOther Ingredients (typical)Suitability
Tablet1 tabletLutein 250 mcg, vitamin C 60 mg, zinc 11 mg60 or 90 tabletsMicrocrystalline cellulose or dicalcium phosphate filler, croscarmellose disintegrant, magnesium stearate, light-protective film coatLead format; three solid actives in one unit
Softgel1 softgelLutein 250 mcg, vitamin C 60 mg, zinc 11 mg30 or 60 softgelsMedium-chain triglyceride or sunflower oil, beeswax suspending agent, gelatin or starch shell with glycerinAlternative where the carotenoid is carried in oil and the solids are suspended

Raw Material Input & Fill (Design Estimate)

Design estimates. Each labeled amount is divided by an assumed assay: marigold extract at 10% lutein (the low end of the 10–20% grade), ascorbic acid at 100% and zinc oxide at 80.3% zinc (65.4 ÷ 81.4), which gives 2.5 mg, 60 mg and 13.7 mg of raw material per unit. The 300 mg tablet and 500 mg softgel fill are assumed unit sizes, and any added vitamin or mineral is deducted from the balance.

FormatRaw Material Input per UnitDesign FillBalance for ExcipientsVerification Before Scale-Up
TabletLutein extract 2.5 mg, ascorbic acid 60 mg, zinc oxide 13.7 mg (76.2 mg in total)300 mg tablet223.8 mgBlend uniformity of the lutein premix, hardness and disintegration, content assay of the three actives, stability of lutein and vitamin C
SoftgelLutein extract 2.5 mg, ascorbic acid 60 mg, zinc oxide 13.7 mg (76.2 mg in total)500 mg fill423.8 mgSuspension homogeneity and settling, shell compatibility with ascorbic acid, fill weight variation, content assay of the three actives

Gummy, liquid and powder versions are separate projects, because the metallic taste of zinc and the acidity of vitamin C each need their own flavor and stability plan in those systems.

Formulation Considerations

Microgram-level lutein in a solid blend. At 2.5 mg of a 10% grade in a 300 mg tablet, the lutein carrier is under 1% of the blend weight. A premix of the extract with filler, stepwise dilution and a blend uniformity test are planned, and the yellow-orange color of the carotenoid is watched for speckling in the tablet core and the coat.
Ascorbic acid next to zinc oxide. Ascorbic acid is acidic and takes up moisture, while zinc oxide is a basic solid. Moisture control, a protective coat and the dry-granulation or direct-compression route are tested for vitamin C potency through shelf life, and a different zinc salt changes both the input weight and the interaction.
Zinc salt and tablet size. The salt weight depends on the zinc content of the salt, as the molecular weights above show, and a salt with a smaller zinc share needs more room in a 300 mg tablet. The salt is chosen together with the taste of the finished unit and any added minerals that compete for tablet volume.
Suspension fill for the softgel version. In a softgel, lutein is carried in oil while ascorbic acid and zinc oxide are suspended solids. Particle size, a suspending wax and the acidity of ascorbic acid against the shell are checked so that the fill stays uniform and the shell keeps its integrity.

Customization Options

Brands adjust the three amounts, the lutein, vitamin C and zinc sources, the format and the surrounding vitamin and mineral base.

ParameterRangeNote
Lutein per serving250 or 300 mcg, or 2 mgExamples for the brand; the extract input scales with the grade
Vitamin C per serving60 or 100 mgAscorbic acid, a buffered ascorbate or a natural vitamin C extract
Zinc per serving11 or 15 mgElemental zinc; the salt sets the input weight and the taste
FormatTablet or softgelGummy, liquid and powder are separate projects
Add-onsZeaxanthin, vitamin E, copperZeaxanthin joins lutein in the carotenoid premix; copper and vitamin E change the mineral balance and the oxidation plan

The pilot run confirms lutein dispersion in the blend or the fill, vitamin C potency next to the zinc salt, coat or shell compatibility and color, and the content assay of all three actives against the labeled amounts.

Technical Status & Data Sources

ItemStatusDetails
Reference formulaNIH DSLDThe ingredient and amount come from a labeled product in the NIH DSLD (Lutein 250 mcg + Vitamin C 60 mg + Zinc 11 mg on the label of CF001966; example DSLD labels 12216, 18940, 18997). The label names the three ingredients by name and lists ascorbic acid and zinc oxide among its ingredients; free lutein is set as the lutein form.
SpecificationSet in formulationLutein (free lutein from marigold extract) 250 mcg, vitamin C as ascorbic acid 60 mg and zinc as zinc oxide 11 mg elemental per serving; lutein assay and carotenoid profile, zinc salt assay, heavy-metal limits and method are fixed with the supplier. The reference tablet carries 31 ingredients in total; the amount basis is set by the three above and the remaining ingredients are counted with the formula. Unit size, fill weight and stability are set in formulation.
Data sourceNIH DSLDDSLD v9.4.0, downloaded 2026-01-10: 50,824 reference formulas merged from on-market labels with complete ingredient amounts. Counts show how labels are distributed.
Market reviewPer marketDose limits, labeling and claims are reviewed for each sales market before a finished product is developed.
ReferencesSources[1] Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Arch Ophthalmol. 2001;119(10):1417-36. DOI · PubMed<br>[2] Age-Related Eye Disease Study 2 Research Group. Lutein + zeaxanthin and omega-3 fatty acids for age-related macular degeneration: the Age-Related Eye Disease Study 2 (AREDS2) randomized clinical trial. JAMA. 2013;309(19):2005-15. DOI · PubMed<br>[3] Evans JR, Lawrenson JG. Antioxidant vitamin and mineral supplements for slowing the progression of age-related macular degeneration. Cochrane Database Syst Rev. 2023;9(9):CD000254. DOI · PubMed<br>[4] Prasad AS. Discovery of human zinc deficiency: its impact on human health and disease. Adv Nutr. 2013;4(2):176-90. DOI · PubMed

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