🟢 86/100

This product is generally safe

  • Folate: 340mg is 340.0× the Tolerable Upper Intake Level (1.0mg)
  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 56% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Folate: 340mg is 340.0× the Tolerable Upper Intake Level (1.0mg)
ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

10.5 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
56% Evidence Coverage

Supplement Facts — Evidence Check

Calories
35 Calories
Total Carbohydrates
5 Gram(s) (2% DV)
Vitamin C
60 mg (67% DV)
62.5 mcg (313% DV)
📊 4.2× RDA — above typical dose (UL: 0.1 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.0625mg UL 0.1mg
20 mcg (17% DV)
✅ Within RDA (0.2× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)
RDA 0.12mg This product: 0.02mg
2 mg (118% DV)
✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 2mg UL 100mg
340 mcg DFE (85% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 340.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 340mg UL 1.0mg
6 mcg (250% DV)
✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.006mg
Proprietary Blend
6.5 Gram(s)

Other Ingredients

Citric Acid Malic Acid natural Citrus Sweetener Silicon Dioxide natural Citrus flavor Huckleberry flavor Stevia Leaf Extract

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) Women (not pregnant or lactating)

Product Information

📋 Directions for Use

Directions: Mix 1 serving (1 packet) with 8 fl. oz. of water (depending on individual taste). Stir to dissolve. One serving (1 packet) may be taken twice per day.

⚠️ Warnings & Precautions

Consult your physician prior to use if you have a preexisting medical condition including: myocardial infarction (heart attack), cardiovascular disease or diabetes, or take medications for any reason including erectile dysfunction. Not recommended for use in children or pregnant or lactating women.

Not recommended for use in children or pregnant or lactating women.

🧪 Formulation Notes

L-arginine complexer

ProArgi-9+ is the highest quality L-arginine supplement in the world. With each packet containing 5 g of free-form, pure L-arginine, this proprietary formulation combines the powerful cardiovascular benefits of L-arginine with a variety of superior heart health ingredients to give your cardiovascular system optimum support.

ProArgi-9+ was formulated in collaboration with leading scientists and cardiovascular specialists who have conducted extensive research on the proper application of L-arginine in promoting heart health. With ProArgi-9+, you're giving your heart the nutrients to support a healthy life.

Slight color changes may occur over time due to the natural fruit flavor.

Additional Information

Store in a cool, dry place.

Product Details

DSLD Entry Date 2021-07-27
Product Type Other Combinations
Form Powder
Brand Synergy
DSLD ID 249487
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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