🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 14% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

4.6 Gram(s) Serving Size
10 Servings
Botanical with Nutrients Product Type
14% Evidence Coverage

Supplement Facts — Evidence Check

Calories
15 Calorie(s)
Total Carbohydrates
3 Gram(s) (1% DV)
Vitamin C
1000 mg (1111% DV)
8 mg (73% DV)
✅ Within RDA (0.7× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 8mg UL 40mg
Sodium
115 mg (5% DV)
Potassium
135 mg (3% DV)
Herbal Blend
350 mg

Other Ingredients

Citric Acid Sorbitol natural Orange Honey flavor Polyethylene Glycol Sucralose Beta-Carotene Canola Oil Silicon Dioxide

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

Directions: Drop 1 effervescent tablet in 8 fl oz of water, let fully dissolve and drink. Enjoy in hot or cold water. Take up to 2 times a day as needed.

⚠️ Warnings & Precautions

Warning: If you are pregnant or nursing, or if you have any medical condition or are taking any medicines, consult your physician beforehand.

Keep out of the reach of children.

Sealed with a tamper evident cap for your protection. People with asthma and progressive conditions such as tuberculosis, leukemia, collagen disorders, multiple sclerosis, AIDS, HIV infection and other autoimmune disease should consult with their physician before using Echinacea.

Also, caution is advised for transplant patients taking immunosuppressive drugs.

Contains wheat.

🧪 Formulation Notes

Formulated with Echinacea Excellent source of zinc for immune health Antioxidant strength of vitamin C Orange Boost Natural flavor

Best Defense is formulated with Echinacea, 1000mg of vitamin C, and 8mg of zinc per serving to support your immune system.

Made in USA with US and imported ingredients

Additional Information

Store in a cool dry place with lid tightly closed.

30-day money-back guarantee. This exclusively formulated product is only available through Herbalife Nutrition Independent Distributors.

Product Details

UPC / SKU 1502US
DSLD Entry Date 2022-06-16
Product Type Botanical with Nutrients
Form Tablet or Pill
DSLD ID 269991
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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