Vitamin C 1 g (1000 mg)®

Vitamins

Brand: Klaire Labs

Tablet or PillVitaminOff Market

Product label for Vitamin C 1 g (1000 mg) — Click to view full label

Net Contents

100 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

100

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

8 28054 00210 4

Product Version

VTC1 rev180116.06

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

1% Daily Value Coverage

1 ingredients report a %DV; 1 meet or exceed 100% DV.

1Dietary Attributes

Label states: Gluten-Free.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen Guide

Contains

Milk
Egg
Fish
Shellfish
Tree Nuts
Peanut
Wheat
Soy
Gluten

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Supplement Facts

Serving Size: 1 Tablet(s) · 1 per day

Ingredient	Amount Per Serving	% Daily Value
Vitamin C(L-Ascorbic Acid)	1000 mg	1111%

Not Present

Other Ingredients

silicified Microcrystalline CelluloseHydroxypropylmethylcelluloseStearic AcidCroscarmellose SodiumSilicon DioxideMagnesium StearateOpaDry coating

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy Free

Label Claims

NutrientAll Other

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: 1 tablet daily with food or as directed by a healthcare professional.

Warnings & Precautions

Precautions re: Allergies

Contains: Tree Nut (coconut).

Precautions re: Pregnant or Nursing or Prescription Medications

Caution: If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your physician before using this product.

Precautions re: Children

Keep out of reach of children.

Precautions re: All Other

Do not use if shrinkwrap is broken or missing.

Storage

Store in a cool, dry place (59 degrees F - 85 degrees F) away from direct light.

Formulation

Formulation re: Does NOT Contain

Free of the following common allergens: Milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. Contains no artificial colors, flavors, or preservatives.

Formula re: Contains

Vitamin C tablets contain 1 gram (1,000 mg) of ascorbic acid, an unbuffered form of vitamin C.

Formulation re: Other

Produced under a strict quality management system in compliance with Good Manufacturing Practices (GMPs) and third-party quality certifications.

FDA Statements

FDA Statement of Identity

Dietary Supplement

Other Label Statements

Brand IP Statement(s) re: (c), (TM), (SM)

SFI

Manufacturer & Distributor

Manufacturer

SFI USA

Reno, NV, 89521

Market Reference

$9.99 – $67570.00· 24 listings

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Klaire Labs Ester-C Bio - Buffered Vitamin C with Bioflavonoids Rutin & French Maritime Pine Extract - Immune & Antioxidant Support - Hypoallergenic (
GoSupps.com5.0(5)
$89.99

Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

Holland & Barrett - Strand
3.7 (51)
Health food shop
406-408 Strand, London WC2R 0NE
Directions 0330 058 2640
Holland & Barrett - Covent Garden
3.7 (60)
Health food shop
39 Long Acre, London WC2E 9LG
Directions 0330 058 2640
Chelsea Health Store
4.5 (28)
Health food shop
400 King's Rd, London SW10 0LJ
Directions 020 7352 4663
for the Ageless
5.0 (69)
E-commerce service
12 John Prince's St, London W1G 0JR
Directions 020 8191 8621
Holland & Barrett - Oxford Street
3.8 (192)
Health food shop
146, 148 Oxford St, London W1D 1NA
Directions 0330 058 2640
Holland & Barrett - Victoria Street
4.2 (60)
Health food shop
86 Victoria St, London SW1E 5JL
Directions 020 7828 6147
Holland & Barrett - Maddox Street
4.3 (52)
Health food shop
6-8 Maddox St, London W1S 1NR
Directions 0330 058 2640
HealthAid
4.1 (35)
Vitamin & Supplements Shop
HealthAid House, Marlborough Hill, Harrow HA1 1UX
Directions 020 8426 3400

Research & Studies

Ode to Good Boundaries
E Zelfand - righttoheal.com
… During active illness, 1 gram every 1-2 waking hours may be safely taken by most. Reduce … to a buffered vitamin C product. 500mg twice daily in children under 5 and 1 gram two to …
Enhanced Vitamin C delivery: A systematic literature review assessing the efficacy and safety of alternative supplement forms in healthy adults
PC Calder, RB Kreider, DL McKay - Nutrients, 2025 - mdpi.com
… Participants received one of four 1000 mg oral preparations as a single dose: vitamin C … with vitamin C metabolites (1% and 3% threonate), and placebo. Vitamin C concentrations in …
202520 citations
Examination of Micronutrients for Children: Their Composition, the Role They Play in Psychological Well-being and Parents' Motivations for Purchasing: a …
AR Harris - 2012 - ir.canterbury.ac.nz
… The difference was also found to be significant for vitamin C (p <.05) and vitamin D (p <.05). … Those participants randomly assigned to the supplement group received a Klaire Laboratory …
20121 citations
… bioavailability and immune benefits of liposome-encapsulated vitamin C: a combination of the effects of ascorbic acid and phospholipid membranes
SV McGarry, D Cruickshank, I Iloba, GS Jensen - Nutraceuticals, 2024 - mdpi.com
… , leading to highly differentiated distribution of vitamin C in different anatomical locations in the body, with the brain maintaining the highest absorption and retention of vitamin C [20]. …
20248 citations
High dose Vitamin C
CA Krone, JTA Ely - Reactions, 2020 - forums.phoenixrising.me
… Vit C is absolutely essential for so many processes in the human body, and I believe that the stresses of this illness probably burn thru C pretty fast. I haven't tested for oxalates, in spite …
2020
Comparative Bioavailability of Vitamin C After Short-Term Consumption of Raw Fruits and Vegetables and Their Juices: A Randomized Crossover Study
M Choi, J Baek, JM Yun, YS Hong, E Park - Nutrients, 2025 - mdpi.com
… Our findings are consistent with previous studies indicating that vitamin C is rapidly absorbed within 1 to 3 h post-intake and returns to baseline within 24 h. Graumlich et al. [11] also …
20252 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-06-16. DSLD Label ID: 265029. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.