🟢 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

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Label Data

3.9 Gram(s) Serving Size
28 Servings
Botanical with Nutrients Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

Calories
10 Calorie(s)
Total Carbohydrates
2 Gram(s) (1% DV)
Vitamin C
600 mg (667% DV)
10 mg (91% DV)
✅ Within RDA (0.9× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 10mg UL 40mg
📊 Market median: 175.0mg (497 products) 📚 11 studies (Tier A: 0, B: 1)
This product: 30mg
📊 Market median: 400.0mg (380 products) 📚 34 studies (Tier A: 1, B: 10)
This product: 100mg

Other Ingredients

evaporated Cane syrup Crystalline Fructose Xylitol Lemon Flavor, Natural Citric Acid Stevia

Label Claims — Verification

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

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Take it straight or mix it with water! Directions for use: Pour one (1) stick pack into mouth or add one (1) stick pack to 4 oz. of water and drink. Take one stick pack daily. Use as needed for up to 2 weeks (14 days). Follow with a rest cycle of at least 1 week (7 days).

⚠️ Warnings & Precautions

Keep out of reach of children.

Consult your physician if you are pregnant, nursing, taking a prescription drug, or have a medical condition.

🧪 Formulation Notes

High potency source of USANA's Proprietary Poly C

Contains Echinacea, Zinc, and Elderberry

Targeted Support Booster C 600 is scientifically formulated with an exclusive blend of ingredients to support an already healthy immune system.

This soothing lemon-berry flavored powder can be mixed with water or taken straight for a delicious dose of the highest-quality zinc, echinacea, elderberry, and USANA's proprietary poly c.

Laboratory tested. Quality guaranteed. Meets USP specification for uniformity, potency, and disintegration, where applicable.

An advanced approach to vitamin C! With USANA's unique proprietary Poly C blend-shown to provide higher, longer-lasting levels of vitamin C in the blood-Booster C 600 is a notable breakthrough in bioavailable vitamin C to support your body's already healthy immune system.

Additional Information

MWT Potency Guaranteed

28-3.9 g stick packs

Store below 25 degrees C.

Customer Service: 1-888-950-9595

Product Details

DSLD Entry Date 2024-12-21
Product Type Botanical with Nutrients
Form Powder
Brand USANA
DSLD ID 322309
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
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
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
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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