Green Tea Extract

Single-ingredient green tea extract reference formula at 500 mg per serving, developed as a capsule, with a powder option at a 1,000 mg serving.

Green Tea is a reference formula for brands building a single-ingredient botanical extract product at a default amount of 500 mg of green tea extract per serving. The extract is the only active ingredient, so the development work centers on the polyphenol and catechin standardization of the extract, the daily catechin intake that the label allows, and the capsule or powder system that carries it.

Capsule is the lead format because a 500 mg extract fits one standard capsule, and a powder version at 1,000 mg serves brands that sell a drink mix. Leaf powders, matcha-style products and concentrated catechin extracts are different raw materials, and the reference labels mix them, so the page is built around a standardized extract.

Ingredient Composition

IngredientPer ServingRaw Material FormAlternative Form (same amount of active)
Green Tea500 mg (default amount)Green tea leaf extract standardized to polyphenols, for example the Green Tea Extract 40–98% Polyphenols grade; specification 500 mg extract per serving, polyphenol and EGCG content set with the supplierGeneral Green Tea Extract Powder with a different polyphenol content, or Green Tea Leaf Powder for a whole-leaf product with a much larger fill weight

Amounts are stated as mg of green tea extract, not of polyphenols or EGCG. The polyphenol amount per serving equals the extract weight multiplied by its assay, so a 500 mg serving of a 40% extract carries about 200 mg of polyphenols and a 98% extract about 490 mg, and the EGCG share inside them is set in the specification.

Intended Benefits & Formula Rationale

This formula is designed for products positioned around botanical metabolic nutrition. Green tea extract is included as the single active so that the standardization, the amount and the excipient system can be set without interaction with other actives.

Intended Benefit DirectionKey IngredientsFormulation Rationale
Botanical polyphenol nutritionGreen TeaIncluded because green tea is the second most popular drink after water and contains tea polyphenols, alkaloids, amino acids and polysaccharides with described antioxidant and hypoglycemic activities [1]. Evidence: Referenced
Safety of concentrated catechinsGreen TeaA systematic review of 159 human studies found that concentrated, catechin-rich preparations caused hepatic adverse events in a dose-dependent way when ingested as large bolus doses, and derived a safe intake of 338 mg EGCG per day for solid bolus preparations [2]. Evidence: Referenced

The extract weight is the stated amount, and the grade moves the dose of catechins. Amount, claims and target market are brand decisions reviewed for each sales market, together with the safety note below.

Available Formats

The green tea reference formula is built for a capsule version and a powder version; counts per serving are design choices that the brand can adjust.

FormatUnitPer ServingPack SizeOther Ingredients (typical)Suitability
Capsule1 capsule500 mg extract60 or 120 capsulesHypromellose capsule shell, flow agentLead format; extract in a standard fill
Powder1 stick pack1000 mg extract30 stick packsDiluent, sweetener, citric acid, flavorDrink mix; bitterness and astringency need masking

Raw Material Input & Fill (Design Estimate)

Design estimates. The input is the labeled extract weight at an assumed 100% assay of the extract as purchased, so 500 mg of extract per capsule is used as the input; the polyphenol and EGCG content follow from the grade and are fixed in the specification.

FormatRaw Material Input per UnitDesign FillBalance for ExcipientsVerification Before Scale-Up
Capsule500 mg extract550 mg per capsule50 mgFlow, fill weight variation, polyphenol and EGCG assay, moisture
Powder1000 mg extract4000 mg per stick3000 mgDispersion in water, bitterness, polyphenol and EGCG assay

Softgel, tablet and gummy versions are separate projects, because a hygroscopic, astringent extract needs its own matrix work in those systems.

Formulation Considerations

Grade sets the catechin dose. A 500 mg serving carries from about 200 mg to about 490 mg of polyphenols across the 40% to 98% range, and the EGCG share is a further assay. The specification names the polyphenol and EGCG assays, and a change of grade is a change of dose.
Daily catechin intake. The systematic review in [2] attributes the hepatic findings to concentrated catechin-rich preparations taken as large bolus doses, and gives 338 mg EGCG per day for solid bolus preparations. The number of capsules per day, the EGCG assay of the grade and the label directions are checked against that level before a product is developed.
Hygroscopic, astringent extract. Green tea extract picks up moisture and cakes, and it is bitter and astringent. Blend humidity, capsule shell choice and a flavor and sweetener system for powders are set early.
Extract, leaf powder or catechin concentrate. Whole-leaf powders carry much less polyphenol per milligram, and concentrated catechin extracts are a higher-risk raw material. Both are separate projects rather than options on this page.

Customization Options

Brands adjust the extract weight, the polyphenol grade, the format and the add-ons.

ParameterRangeNote
Extract per serving300, 450, 500 or 1000 mgExamples for the brand; capsule count or stick size changes with the tier
Polyphenol grade40% to 98%Changes the polyphenol dose per serving and the input weight
FormatCapsule or powderSoftgel, tablet and gummy are separate projects
Pack size30 to 120 unitsSet by the brand
Add-onsL-carnitine, chromium, vitamin CAnother active changes the fill weight and the daily-intake calculation

The pilot run confirms flow and fill weight of the extract blend, taste masking in the powder, and the polyphenol and EGCG assay of the first units against the specification.

Flavor Options

FormatSuggested FlavorsWhy
PowderLemon, peach, mintCitrus, stone-fruit and mint profiles soften the astringency of the extract

Technical Status & Data Sources

ItemStatusDetails
Reference formulaNIH DSLDThe ingredient and amount come from a labeled product in the NIH DSLD (500 mg on the label of CF003832; example DSLD labels 22600, 24410, 64242). The label names the ingredient as green tea extract; a polyphenol-standardized leaf extract is set as the form.
SpecificationSet in formulationGreen tea leaf extract, 500 mg per serving, standardized to polyphenols with EGCG content stated; assay, caffeine, solvent residue, pesticide and heavy-metal limits and method are fixed with the supplier. 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] Zhao T, Li C, Wang S, et al. Green Tea (Camellia sinensis): A Review of Its Phytochemistry, Pharmacology, and Toxicology. Molecules. 2022;27(12):3909. DOI · PubMed<br>[2] Hu J, Webster D, Cao J, et al. The safety of green tea and green tea extract consumption in adults – Results of a systematic review. Regul Toxicol Pharmacol. 2018;95:412-433. DOI · PubMed

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