Purchased thorne vitamin c locally. was going to refill on amazon. can the manufacturer thorne simply state whether ingredients are from china or not?

Dan, one of the reasons I buy Thorne is because the brand is highly recommended by Dr. Andrew Huberman from Standford Med. The ingredients are not from China. Headquaters are in NYC and manufacturing is in South Carolina. Hope that helps.

Is this NSF certified?

There is nothing on the label that says NSF Certified.

Ascorbic acid? so sourced from China?

The container does not specify where it is manufactured.

What are the capsules made of?

Hypromellose – also known as hydroxypropyl methylcellulose – is used to make Thorne's vegetarian capsules. Most of the HPMC Thorne uses to make their vegetarian capsules is naturally derived from wood pulp. In addition, Thorne’s vegetarian capsules are organic compliant, non-GMO, Kosher and Halal certified, vegan, and hypoallergenic.

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– Vitamin C with Flavonoids - Blend of Vitamin C and Citrus Bioflavonoids - Support Immune System and Collagen Production - 90 Capsules

Product ID: 467300852

Details

Brand
THORNE
Diet type
Gluten Free
Flavour
Citrus Fish
Item form
Capsule
Primary supplement type
Vitamin C

🌿Free from 8 major allergens

🍊Natural citrus bioflavonoids blend

🛡️1000mg Vitamin C per serving

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VT12900

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Description

🍊 Elevate your immunity and glow game—because thriving is the new hustle!

IMMUNE SHIELD POWER - Fortify your defenses with 1000mg of pure Vitamin C plus antioxidant-rich citrus bioflavonoids for next-level immune support.
CLEAN ALLERGY FREE - Formulated without gluten, dairy, soy, nuts, or shellfish—perfect for sensitive, health-conscious professionals.
GLOW BOOSTING COLLAGEN - Fuel radiant skin and resilient hair by enhancing collagen production naturally—because your glow deserves science-backed care.
MADE IN THE USA WITH INTEGRITY - Crafted by Thorne Research, a leader in personalized wellness, ensuring premium quality you can trust every day.
TRUSTED QUALITY PROVEN RESULTS - Backed by 4.8-star reviews from over 3,300 users who swear by its efficacy and easy-to-swallow capsules.

Thorne Vitamin C with Flavonoids delivers a potent 1000mg dose of Vitamin C combined with natural citrus bioflavonoids to support immune function, collagen production, and overall skin and tissue health. Free from common allergens and crafted in the USA, this supplement is designed for health-conscious adults seeking clean, effective daily wellness support.

Specifications

ASIN	B09FYFM7N3
Age Range Description	Adult
Benefits	Immune Support
Best Sellers Rank	10,868 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 73 in Vitamin C
Brand	THORNE
Brand Name	THORNE
Colour	Orange
Country Of Origin	USA
Customer Reviews	4.8 out of 5 stars 3,347 Reviews
Diet Type	Gluten Free
Diet type	Gluten Free
Dosage Form	Capsule
Flavour	Citrus,Fish
Item Dimensions	6.6 x 6.6 x 11.4 centimetres
Item Form	Capsule
Item Weight	0.18 Pounds
Item form	Capsule
Manufacturer	Thorne Research
Manufacturer Part Number	C154
Model Number	C154
Number of Items	1
Primary Supplement Type	Vitamin C
Primary supplement type	Vitamin C
Product benefits	Immune Support
Special Ingredients	Citrus Bioflavanoids
Specific Uses For Product	Antioxidant,Blend,Collagen Production,Hair Health,Immune Support,Skin
UPC	693749012481
Unit Count	90.00 count

Reviews

A**R

Great

Best product, highly recommend

20.03.2026

M**S

Great source of vitamin c

Great quality source of vitamin c. Easy to swallow and perfect to boost the immune system

12.12.2025

A**R

Best supplement in my routine

Always thought I was getting plenty of vitamin C In my diet but I saw a huge improvement from taking these. Probably more than any supplement before (besides when I was vitamin d deficient). Saw an immediate brightening in my undereyes and my skin health has improved loads

11.08.2025

M**A

Great product

Thorne vitamins are best quality

26.05.2025

S**E

My favourite Vit C

I have tried many Vitamin C supplement and this one rose on top. Vitamin C is best taken with Biflavonoids, Thorne research have managed to mix the right amount in the formula. Immediate results were observed in terms of energy levels and on the skin.

9.04.2025

R**L

Thorne vitamin C

Good so far , not had any problems with stomach issues . Take twice a day easy to swallow . I wouldn’t say value for money as will only last a month and half

11.10.2025

J**.

The price is too high

The price is too high compare with advisetizing

28.03.2023

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