🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Capsule(s) Serving Size
Non-Nutrient/Non-Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

200 mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 200mg UL 400mg

Other Ingredients

Sugar Gelatin Starch Food Glaze Magnesium Silicate Povidone Contains <2% of

Label Claims — Verification

All Other
Structure/Function
All Other (98% of products) Structure/Function (93% of products) Nutrient (19% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free Dairy Free

Product Information

📋 Directions for Use

DIRECTIONS: For adults, take one (1) capsule daily, preferably with a meal.

⚠️ Warnings & Precautions

WARNING: Not intended for use by pregnant or nursing women. If you are taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur. This product contains caffeine. Avoid additional consumption of caffeine, which may intensify adverse effects.

Not intended for use by persons under the age of 18. Keep out of reach of children.

Do not use if seal under cap is broken or missing.

🧪 Formulation Notes

No Artificial Flavor or Sweetener, No Preservatives, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Fish. Sodium Free.

This product contains caffeine.

Additional Information

Precision Engineered has pioneered the manufacture of premium sports nutrition supplements. Our commitment to quality is the highest in our industry. Every product undergoes rigorous analysis for purity, potency, safety and freshness. We guarantee it!

PROD. #51847 B51847 00B

PRECISION ENGINEERED(R) HARDCORE SERIES

8-HOUR SUSTAINED RELEASE • Energy* • Mental Focus *

Our product is specially formulated to provide you with a sustained release of caffeine. Caffeine provides dual effects by providing energy magnification for both the mind and the body.* Our product gets you pumped for exercise, while helping to boost mental energy and alertness.* Our formula utilizes cutting-edge beadlet coating technology. Each beadlet is coated with the active caffeine ingredient, and then sustained-release coating is further added to achieve the 8 hour profile.

Store at room temperature.

QA QUALITY ASSURED

Product Details

UPC / SKU 7 66443 51847 1
DSLD Entry Date 2013-06-25
Product Type Non-Nutrient/Non-Botanical
Form Capsule
DSLD ID 21369
Data Updated 2026-04-11

Research Evidence

82 Research Sources
51 Avg Quality Score
28 Rct
19 Meta Analysis
17 Clinical Trial
16 Systematic Review
A Preconception lifestyle advice for people with infertility
Meta Analysis The Cochrane database of systematic reviews 2021
B The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2019
B Effects of caffeine chewing gum supplementation on exercise performance: A systematic review and meta-analysis
Meta Analysis European journal of sport science 2023
B Genetic susceptibility to caffeine intake and metabolism: a systematic review
Systematic Review Journal of translational medicine 2024
B Pharmacological interventions for sleepiness and sleep disturbances caused by shift work
Meta Analysis The Cochrane database of systematic reviews 2014
B Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Meta Analysis Nutrients 2022
B The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress markers: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials
Meta Analysis The British journal of nutrition 2024
B Effect of green tea catechins with or without caffeine on anthropometric measures: a systematic review and meta-analysis
Systematic Review The American journal of clinical nutrition 2010
B Caffeine, CYP1A2 Genotype, and Endurance Performance in Athletes
Rct Medicine and science in sports and exercise 2018
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010
View all evidence for Caffeine →

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