Ester-C Effervescent 1000 mg Natural Orange Flavor

product on market Powder NatureSmart 🟢 Safety: 100/100
Brand: NatureSmart
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

Label for Ester-C Effervescent 1000 mg Natural Orange Flavor
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Label Data

10 Gram(s) Serving Size
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

Calories
25 Calorie(s)
Total Carbohydrates
6 Gram(s) (2% DV)
Sugar
5 Gram(s)
Vitamin C
1026 mg (1710% DV)
0.38 mg (25% DV)
✅ Within RDA (0.3× RDA of 1.2 mg) 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 0.38mg
0.43 mg (25% DV)
✅ Within RDA (0.3× RDA of 1.3 mg) 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 0.43mg
5 mg (25% DV)
✅ Within RDA (0.4× RDA of 14 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 5mg UL 35mg
10 mg (500% DV)
📊 7.7× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 10mg UL 100mg
12.5 mcg (3% DV)
📊 Market median: 667.0mg (446 products) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.0125mg UL 1.0mg
25 mcg (417% DV)
📊 10.4× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.025mg
2.5 mg (25% DV)
✅ Within RDA (0.5× RDA of 5 mg) 📚 1 studies — no high-quality reviews
RDA 5mg This product: 2.5mg
Calcium
150 mg (15% DV)
60 mg (15% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 60mg
2 mg (13% DV)
✅ Within RDA (0.2× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 2mg UL 40mg
0.5 mg (25% DV)
✅ Within RDA (0.2× RDA of 2.3 mg) 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 0.5mg UL 11mg
5 mcg (4% DV)
✅ Within RDA (0.1× RDA of 0.035 mg) 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.005mg
93 mg (3% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 93mg
Sodium
100 mg (4% DV)
Potassium
280 mg (8% DV)
Antioxidant Health Proprietary Blend
58 mg

Other Ingredients

Fructose Maltodextrin Malic Acid Citric Acid Contains Less Than 2% of

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions: For adults, pour packet into 4-6 fl. oz. of water once daily. Stir or Shake.

Take once a day!

⚠️ Warnings & Precautions

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18. Keep out of reach of children.

Do not use if packet is torn or open.

🧪 Formulation Notes

Non-GMO. No Gluten, no Wheat, no Milk, no Lactose, no Artificial Flavor, no Artificial Sweetener, no Soy, no Yeast, no Fish.

Suitable for Vegetarians

B Vitamins to support energy

Plus electrolytes

- 100% Vegetarian

- Non-GMO - No artificial sweeteners

Additional Information

Call toll free 1-866-417-0739 with questions or comments Mon.-Sat., 9am-7pm EST.

Prod. No. 68480 B58880 00A

Made in the USA with select ingredients from around the world

Store at room temperature.

Patented immune health formula

Clinically studied to last longer than regular Vitamin C 24 Hour immune support

Easy pour packet

Product Details

UPC / SKU 0 25077 74184 7
DSLD Entry Date 2016-12-23
Product Type Other Combinations
Form Powder
Brand NatureSmart
DSLD ID 68748
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
PubMed DOI
View all evidence for Vitamin C →

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