🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
33% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
150 mg (250% DV)
50 mg (2500% DV)
📊 38.5× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 50mg UL 100mg
100 mg (1000% DV)
📊 20.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 100mg
Adrenal Polypeptide Fractions
400 mg
250 mg
📊 Market median: 496.0mg (192 products) 📚 20 studies — no high-quality reviews
This product: 250mg
250 mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 250mg
📊 Market median: 420.0mg (127 products) 📚 1 studies (Tier A: 0, B: 1)
This product: 50mg
Adrenal Cortex, Powder
33 mg
Rose Hip, Powder
20 mg

Other Ingredients

Gelatin Rice Flour Magnesium Stearate Clove powder

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) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions As a dietary supplement, take 2 capsules daily with food or as directed by a healthcare professional.

⚠️ Warnings & Precautions

Warnings Pregnant or lactating women, those with diabetes, hypoglycemics, and people with known medical conditions and/or taking drugs should consult with a licensed physician and/or pharmacist prior to taking dietary supplements.

Keep out of reach of children.

🧪 Formulation Notes

With Vitamin C & L-Tyrosine

Free of milk, eggs, peanuts, tree nuts, crustacean shellfish, fish, soy, gluten, titanium dioxide.

Additional Information

Keep dry and at room temperature (59 degrees - 86 degrees F [15 degrees - 30 degrees C]).

Product Details

DSLD Entry Date 2022-09-22
Product Type Other Combinations
Form Capsule
Brand Synergy
DSLD ID 277450
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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