X-12

Brand: GNC Pro Performance AMP

Adult Female (18 - 50 Years)X-12 contains 200 mg of caffeine along with a proven blend of piperineOther Combinations
Quality score
60/100
DSLD
31718
UPC
Form
Capsule
Serving size
1 Red Capsule(s)
See label
Net contents
30 Pak(s)
Standard Pack
Top DV
Niacin100%
Per serving
Directions
DIRECTIONS: As a dietary supplement, for optimal health benefits, take contents of one packet daily with food every morning. On workout days, for individuals looking to maximize energy production, X-12 can be taken 30-60 minutes prior to exercise.
NIH DSLD-backedSource links included

Dr. Feb's Analysis

Scientific Mechanism

GNC X-12 utilizes a multi-pathway approach to cellular energy. The Proprietary Thermogenic Blend (243.34 mg) likely contains Capsicum extracts which activate TRPV1 receptors, inducing thermogenesis (heat production) to increase caloric expenditure. Caffeine (200 mg) acts as an adenosine receptor antagonist, blocking fatigue signals and stimulating the central nervous system for heightened alertness. Niacin (Vitamin B3) serves as a precursor to NAD+, a coenzyme essential for converting carbohydrates and fats into usable cellular energy (ATP). Additionally, Piperine (Black Pepper extract) enhances the bioavailability of these compounds, ensuring efficient absorption and utilization within the body.

Key Benefits

Key benefits include:

  • Sustained Energy Levels: The 200mg caffeine content provides a potent stimulant effect to combat fatigue and improve focus.
  • Enhanced Metabolism: Thermogenic ingredients help raise the body's resting metabolic rate, supporting calorie burn.
  • Improved Nutrient Absorption: Piperine is included to maximize the effectiveness of the active ingredients.
  • Vitamin B3 Support: Niacin contributes to normal energy-yielding metabolism and reduces tiredness.

Usage & Safety

Best practices, timing, dosage, and safety interactions:

  • Dosage: Take 1 Red Capsule daily as directed on the label.
  • Timing: Consume in the morning or early afternoon to avoid interference with sleep patterns due to the high caffeine content.
  • Safety: Do not exceed the recommended dose. Consult a physician if you are sensitive to stimulants, pregnant, nursing, or taking medication (particularly blood pressure or MAOI drugs).
Daily value highlights
Niacin100%
Receipts
Official label PDF
NIH DSLD label snapshot (primary source)
Open PDF ↗

Frequently Asked Questions

What are the key benefits of X-12?
X-12 is designed to increase energy levels, enhance metabolism through thermogenesis, and support weight management goals using a blend of caffeine, niacin, and piperine.
How should I take this supplement?
The label suggests taking 1 Red Capsule daily. It is best taken with a meal and plenty of water, preferably in the morning to utilize the stimulant effects of the 200mg caffeine.
Are there known allergens?
Based on the provided data, X-12 contains gelatin (animal-derived) and artificial colors. Individuals with allergies to these ingredients should avoid this product.
Is GNC Pro Performance AMP a reputable brand?
Yes, GNC is a well-established brand in the supplement industry and is listed in the NIH Dietary Supplement Label Database (DSLD), indicating a recognized presence in scientific and regulatory databases.
X-12
Quality 60/100 • DSLD 31718
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