🟢 87/100

This product is generally safe

  • Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 55% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

6.5 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
55% Evidence Coverage

Supplement Facts — Evidence Check

Calories
20 Calorie(s)
Total Carbohydrates
5 Gram(s) (2% DV)
Vitamin C
300 mg (333% DV)
1.5 mg (125% DV)
✅ 1.2× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 1.5mg
1.7 mg (131% DV)
✅ 1.3× RDA — within safe limits 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 1.7mg
40 mg (250% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.1× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 40mg UL 35mg
20 mg (1176% DV)
📊 15.4× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 20mg UL 100mg
333 mcg (83% DV)
✅ Within RDA (0.8× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.333mg UL 1.0mg
120 mcg (5000% DV)
📊 50.0× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.12mg
10 mg (200% DV)
✅ 2.0× RDA — within safe limits 📚 1 studies — no high-quality reviews
RDA 5mg This product: 10mg
Proprietary Energy Blend
3955 mg

Other Ingredients

Natural Flavors Citric Acid natural Citrus Sweetener Silicon Dioxide Malic Acid Stevia Leaf Extract Natural color

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: Mix 1 serving (1 packet) with 8 oz of water. Stir or shake to dissolve. Suggested serving is 1 packet per day.

⚠️ Warnings & Precautions

Caution: Consult your health care provider prior to using this product if you are pregnant, nursing or have a known medical condition.

Too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat.

Not recommended for use by children under 18 years of age.

🧪 Formulation Notes

Energy with L-Arginine

Synergy's e9 delivers natural energy powered by L-Arginine and Guarana. A unique blend of amino acids, featuring arginine, helps boost and sustain energy levels. Natural caffeine from guarana, combined with a blend of stimulating herbal extracts, heightens your mental and physical energy levels. A combination of B vitamins supports the body's energy production while allowing you to focus that enhanced energy.

e9's exclusive energy formulation provides steady energy for hours. Anytime during the day when you need to be focused, alert, and energized, mix up an e9 and experience its fast, long-lasting energizing effect.

Slight color changes may occur over time due to the natural fruit flavor. There is no change in the efficacy or potency of the product.

Additional Information

Store in a cool, dry place.

Product Details

DSLD Entry Date 2020-04-23
Product Type Other Combinations
Form Other (e.g. tea bag)
Brand Synergy
DSLD ID 217177
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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