🟢 90/100

This product looks safe

  • Niacin: 40mg is 1.1× the Tolerable Upper Intake Level (35mg)
  • 75% 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)

Label Data

0.97 Fluid Ounce(s) Serving Size
6 Servings
Other Combinations Product Type
75% Evidence Coverage

Supplement Facts — Evidence Check

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
40 mg (2353% DV)
📊 30.8× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 40mg UL 100mg
500 mcg (20833% DV)
📊 208.3× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.5mg
Energy Blend
2000 mg

Other Ingredients

Water, Purified Natural & Artificial Flavors Sucralose Potassium Sorbate Sodium Benzoate Ethylenediaminetetraacetic Acid

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (97% of products) Structure/Function (86% of products) Nutrient (36% of products)

Target Groups

Adult (18 - 50 Years) Kosher Women (not pregnant or lactating) Sugar Free

Product Information

📋 Directions for Use

Recommended use: take one half (1/2) bottle for moderate energy. Take one whole bottle for maximum energy. Do not exceed two bottles daily, consumed several hours apart.

⚠️ Warnings & Precautions

Caution: Contains caffeine comparable to 12 ounces of the leading premium coffee. Limit caffeine products to avoid nervousness, sleeplessness, and occasional rapid heartbeat. You may experience a Niacin Flush (hot feeling, skin redness) that lasts a few minutes. This is caused by increased blood flow near the skin.

Do not take if you are pregnant or nursing. If you are taking medication or have a medical condition, consult your doctor before use.

Not recommended for children.

Phenylketonurics: Contains phenylalanine.

🧪 Formulation Notes

Sugar free

Vitamins 230mg Caffeine

Extra strength

Star-K (Kosher)

Additional Information

6 - 1.93 fl oz (57 mL)

Use or discard any remained within 72 hours (three days) after opening. Refrigeration not required.

Individual results may vary. See 5-hourENERGY.com for more details.

Star-K (Kosher)

Product Details

DSLD Entry Date 2024-05-23
Product Type Other Combinations
Form Liquid
DSLD ID 314007
Data Updated 2026-04-11

Research Evidence

241 Research Sources
55 Avg Quality Score
113 Meta Analysis
75 Systematic Review
32 Rct
11 Clinical Trial
3 Other
3 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Openfda Safety
A Niacin for primary and secondary prevention of cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017
A Use of high potency statins and rates of admission for acute kidney injury: multicenter, retrospective observational analysis of administrative databases
Meta Analysis BMJ (Clinical research ed.) 2013
A Effect on cardiovascular risk of high density lipoprotein targeted drug treatments niacin, fibrates, and CETP inhibitors: meta-analysis of randomised controlled trials including 117,411 patients
Meta Analysis BMJ (Clinical research ed.) 2014
A A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Meta Analysis Nature medicine 2024
A Meta-analysis and imputation refines the association of 15q25 with smoking quantity
Meta Analysis Nature genetics 2010
A Genome-wide meta-analyses identify multiple loci associated with smoking behavior
Meta Analysis Nature genetics 2010
A Antidepressants for smoking cessation
Meta Analysis The Cochrane database of systematic reviews 2014
A Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne
Meta Analysis The Cochrane database of systematic reviews 2020
B Assessment of the Role of Niacin in Managing Cardiovascular Disease Outcomes: A Systematic Review and Meta-analysis
Meta Analysis JAMA network open 2019
B Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis
Meta Analysis JAMA 2016
View all evidence for Niacin →

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