Green Tea Extract with EGCG Capsules OEM Manufacturer

Dosage Form: capsules

Dose: 2 capsules per day

OEM: Customized logo is welcome, Packing as your requirement. offering private label

Certifications: ISO 9001, HACCP, GMP factory; batch inspection Certificates of Account (COAs) provided.

Global delivery: Overseas warehouses in the US and Europe

Type of Product: green tea extract capsules

Model Number: ASRN-green tea extract capsule

Specification: 500mg,800mg/bottle or customized

Bottles (30/60/90/120 count) | Blister Packs | Bulk Bags | Custom Label Design

Sample: green tea extract capsules Avaliable

MOQ: 50 bottles

Keywords: Organic green tea extract capsules

Brand: Ausreson

Appearance: capsules

Storage: Cool Dry Place

Shelf Life: 2 Years

Test Method: HPLC

We can source certified organic green tea extract upon request (MOQ and price may differ)

Last updated: May 2026

EGCG-Containing Green Tea Extract Capsules – OEM Manufacturing Services for Own-Brand Metabolic Support Products

As a GMP-certified OEM manufacturer, we produce standardized green tea extract capsules containing 50% EGCG (customizable from 30% to 80%), designed to support antioxidant defense, boost metabolism, and maintain cardiovascular health. Our own-brand services include low minimum order quantities (50 bottles), caffeine-free options, custom formulations (e.g., added Vitamin C/probiotics), and flexible packaging (bottles, blister packs). We have warehouses in the US and EU for fast B2B delivery. All batches are HPLC tested and come with a Certificate of Analysis (COA). Request a quote or sample for your own-brand product today.

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Components and Sources

1. Tea polyphenols: accounting for about 30%-40%, is the most important antioxidant component in green tea, of which epigallocatechin gallate (EGCG) accounts for more than 60% of the total amount of catechins, with an antioxidant capacity of 100 times that of Vitamin C.

2. Caffeine: low content (about 3%-5%), can assist in boosting metabolic rate, but sensitive people need to pay attention to the amount of intake.

3. Other ingredients: such as theanine, vitamin C, minerals, etc., to assist in regulating nerve function and immunity.

Main Actions and Mechanisms 

1. Antioxidant and anti-inflammatory 

Components such as EGCG reduce oxidative stress damage by scavenging free radicals and inhibiting the NF-κB inflammatory pathway, potentially slowing down cellular aging and benefiting skin health.

2. Cardiovascular Health Support 

Clinical studies have shown that a daily intake of 400-800mg of green tea extract can lower total cholesterol and low-density lipoprotein (LDL) by mechanisms involving inhibition of intestinal cholesterol absorption and promotion of bile acid excretion.

3. Metabolic regulation 

Fat loss assistance: catechins and caffeine synergize to promote fat oxidation and increase basal metabolic rate by about 4%-5%.

Blood Sugar Control: Inhibits α-glucosidase activity, slowing down the breakdown and absorption of carbohydrates.

Suitable for people 

People who are chronically exposed to oxidative stress such as pollution and UV light.

People with early metabolic abnormalities who need dietary intervention for high blood lipids/glucose.

People who need to enhance energy consumption during the fat loss period of exercise (recommended to match with exercise).

Synergy with other nutraceuticals

1. Vitamin C: Enhances the stability and absorption of catechins.

2. Fish oil: synergistically lower triglycerides, but need to be taken at intervals to avoid affecting absorption.

3. Probiotics: alleviate the fluctuation of intestinal flora caused by tea polyphenol intake in some people.

Popular Custom Formulas We Offer:

• EGCG + Vitamin C: Enhanced absorption and stability.
• EGCG + Probiotics: For gut-friendly metabolic support.
• Decaffeinated EGCG: For sleep-sensitive consumers.

How to Choose High-Quality Green Tea Extract Capsules

• Standardized Extract: Look for products labeled "Standardized Extract," which ensures each dose contains a specific amount of the active ingredient, usually EGCG. High-quality products typically indicate the percentage of catechins and EGCG.
• Certification and Purity: Choose products certified by third-party testing and free of heavy metals, pesticides, and other contaminants. Consumers in Europe and America place particular emphasis on certifications from organizations such as USP (United States Pharmacopeia), NSF International, or ConsumerLab.
• Capsule Ingredients: Pay attention to the ingredients of the capsule shell—many consumers in Europe and America prefer plant-based capsules (such as hydroxypropyl methylcellulose capsules), especially vegetarians and those with specific dietary requirements.
• Origin and Transparency: Choose products from brands that are transparent and clearly explain the source of raw materials and the production process. Many consumers in Europe and America prefer green tea grown sustainably.

Usage Recommendations

Recommended Dosage

The typical dosage range for green tea extract capsules is 250-500 mg of standardized extract daily (usually containing 30-50% catechins). It is recommended to start with a lower dose and adjust according to individual response.

Optimal Timing of Administration

To maximize metabolic benefits, many experts recommend taking green tea extract capsules before meals. However, those sensitive to caffeine may find it more suitable to take them in the morning or early afternoon to avoid affecting sleep.

Possible Side Effects

Green tea extract is generally considered safe, but high doses may cause restlessness, headaches, or stomach upset due to caffeine. Choosing a low-caffeine or caffeine-free extract can minimize these effects.

Drug Interactions

Green tea extract may interact with certain medications, including blood thinners and some heart medications. Consult a healthcare professional before starting any new supplement regimen.

FAQ.

How does green tea extract capsule differ from drinking green tea?

Green tea extract capsules provide a standardized dose of the active ingredient, typically a concentrated form of the catechins found in traditional green tea. A cup of green tea usually contains 50-100 mg of catechins, while one serving of green tea extract capsules may provide the equivalent of 5-10 cups of green tea's worth of catechins, but without the requirements for liquid volume and brewing time.

Does green tea extract capsule cause insomnia?

This depends on the product's caffeine content. Standard green tea extract does contain some caffeine, but far less than coffee. People sensitive to caffeine can choose decaffeinated green tea extract capsules, which still retain the benefits of catechins but contain virtually no caffeine.

When should I take green tea extract capsules for best results?

It is recommended to take them 30 minutes before meals, especially if you are concerned about metabolic support. However, if it causes stomach upset, it can be taken with food. Avoid taking them before bedtime, especially if you choose a product containing caffeine.

Are green tea extract capsules suitable for long-term use?

Studies have shown that long-term use of green tea extract at recommended doses is safe for most people. However, periodic use is recommended, such as taking a one-month break after 3-4 months of continuous use, or consulting a healthcare professional for personalized advice.

Q: Are you a factory or a trading company? Do you accept factory inspections?

A: We are a factory with our own facilities located in Xi'an. You are welcome to conduct factory inspections via video or in person (advance appointment required).

About us.

Private Label design, fast delivery, USA Warehouse, European Warehouse, capsules factory,Softgels factory,tablets factory, pills factory, Gummies factory, Liquid Drops factory,Gum factory,solid beverage factory, customized factory, capsules manufacturer,Softgels manufacturer, tablets manufacturer, pills manufacturer, Gummies manufacturer, Liquid Drops manufacturer,Gum manufacturer,solid beverage manufacturer, customized manufacturer.

Our advantage

We possess extensive experience, handling every step from sourcing each ingredient in the formulation to post-filling inspection, all at the most competitive prices and with the fastest delivery times.

InterlGroup owns factory, Main Product Foods additives, Nutritional supplements, Healthcare Products(capsules,Softgels,tablets,Gummies,Liquid Drops,Gum,solid beverage and other customized products), plant extracts.

Support OEM&ODM service，Design label packaging, Overseas in stock, Fast customization, Drop Shipping.

Intergroup is supplying OEM service for the Well-known brands Reson and Ausreson. 

Alibaba International Station No.1 supplier,  Alibaba International Station Number 1, Alibaba International Station Number one.

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