NOW Foods
Green Tea Extract 400 mg

90/100
SUPPIE SCORE
82/100
EFFICACY
High
SAFETY
96/100
CLEANLINESS
What Does Green Tea Extract 400 mg Do?
This NOW Foods Green Tea Extract offers good antioxidant efficacy with 400 mg extract and 60 mg vitamin C, dosages aligning with research for cellular protection. Safe for most adults at low risk, though monitor caffeine sensitivity and take with food to avoid minor GI issues.
What are the main catechins in green tea extract and their specific health benefits?
How does the vitamin C in this product enhance the effects of green tea extract?
What dosage of green tea extract is recommended for antioxidant support?
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What Are the Benefits of Green Tea Extract 400 mg?
Based on proven scientific research
Antioxidant ProtectionStrong
Cellular Health SupportModerate
Free Radical ScavengingStrong
Immune FunctionModerate
Good For:
What Are the Side Effects of NOW Foods Green Tea Extract 400 mg?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•At 400 mg green tea extract (160 mg catechins), the dosage is well below the 800 mg EGCG/day threshold linked to liver enzyme elevations in studies, reducing hepatotoxicity risk when taken with food.
•Contains approximately 10 mg natural caffeine per serving, which may cause mild stimulation but is low compared to coffee; potential interactions with stimulants or sedatives.
•Vitamin C at 60 mg is safe and supports antioxidant synergy without exceeding upper limits.
•Not recommended during pregnancy or breastfeeding due to caffeine and potential folic acid interference; consult physician if pregnant, nursing, or with liver conditions.
•May inhibit iron absorption if taken with meals; suitable for vegetarians/vegans, free of common allergens per label.
•Manufactured in GMP facility with no reported contamination issues; long-term use safe at this dose based on clinical data.
Potential Side Effects
Negative Interactions
Allergens
None listed
Inactive Ingredients
Hypromellose (cellulose capsule)
Low RiskStearic acid (vegetable source)
Low RiskWhat Are the Ingredients in NOW Foods Green Tea Extract 400 mg?
Vitamin C (as Ascorbic Acid)
60 mg
Green Tea Extract (Leaf) (min. 40% Catechins)
400 mg
Hypromellose (cellulose capsule)
Stearic Acid (vegetable source)
Dosage & Bioavailability
How the active doses and forms in Green Tea Extract 400 mg compare to the research.
•Green Tea Extract (Leaf) (min. 40% Catechins) — 400 mg per serving; within the 150-2,500 mg/day used in studies.
•Green Tea Extract (Leaf) (min. 40% Catechins) — standardised to 40% catechins, about 160 mg catechins per serving.
•Vitamin C (as Ascorbic Acid) — 60 mg per serving, part of the daily reference intake (80 mg EU NRV, 90 mg US DV); studies use 200-3,000 mg/day.
Sources & References
PMC6076941
Information from pmc.ncbi.nlm.nih.gov
PMC7084675
Information from pmc.ncbi.nlm.nih.gov
Egcg green tea extract 400 mg by now foods
Information from www.professionalsupplementcenter.com
PMC7009618
Information from pmc.ncbi.nlm.nih.gov
NBK299060
Information from www.ncbi.nlm.nih.gov
11598
Information from www.iherb.com
Green tea extract
Information from examine.com
NBK547925
Information from www.ncbi.nlm.nih.gov
21538851
Information from pubmed.ncbi.nlm.nih.gov
PMC3746392
Information from pmc.ncbi.nlm.nih.gov
Green tea extract 400 mg veg capsules
Information from www.nowfoods.com
Egcg green tea extract 400 mg veg capsules
Information from www.nowfoods.com
PMC9501439
Information from pmc.ncbi.nlm.nih.gov
Details
Information from www.webmd.com
PMC2748751
Information from pmc.ncbi.nlm.nih.gov
PMC9495874
Information from pmc.ncbi.nlm.nih.gov
PMC11445908
Information from pmc.ncbi.nlm.nih.gov
Details
Information from www.webmd.com
Green tea
Information from www.webmd.com
29580974
Information from pubmed.ncbi.nlm.nih.gov
32143309
Information from pubmed.ncbi.nlm.nih.gov
What are green tea extracts main drawbacks
Information from examine.com
Green tea
Information from www.nccih.nih.gov
B0013OQL0U
Information from www.amazon.com
Frequently Asked Questions
Common questions about NOW Foods Green Tea Extract 400 mg