• 300% More Pre-Workout Calorie Burn to Ignite Your Metabolism**
• Enhances Physical and Mental Intensity and Ignites Heat Shock Proteins*
• Energizing Formula Improves Cardio Endurance by Nearly 5 Minutes**

If amplifying training performance is what you want, Amplified Muscle Igniter 4X is what you need. GNC's first and only 4-phase supplement with clinically researched blends designed to encompass the multiple aspects of workouts - delivering benefits before, during and after exercise. This multi-phasic formula supplies clinically proven components to support the metabolic phases of muscle action throughout training. Its 4-phase system supports cellular reactions that help enhance pre-workout calorie-burning, improve physical and mental intensity, ignite heat shock proteins (HSPs), increase endurance and support the recovery process - all in one dynamic formula!* Amplified Muscle Igniter 4X - GNC's first and only 4-phase thermogenic workout enhancer.

Amplified Muscle Igniter 4X is a supplement that provides the complete formula to take you through the full metabolic cycle of athletic performance and training.

Calorie Burn Blend - Burn more calories before, during, and after workouts. This exclusive Calorie Burn Blend features technology-enhanced red and black pepper extracts and other superior components proven to provide calorie-burning effects.

Performance Blend - Workout harder and longer. The proprietary Performance Blend features naturally caffeinated plant extracts and other natural ingredients proven to improve endurance and workout intensity.*

Sports Antioxidant Blend - This matrix features a unique, clinically studied Dual GE Amplifier™ shown to enhance antioxidant status in athletes post-exercise.* Additional features include fenugreek and yohimbe for an additional natural herbal pump.

400 mg of Caffeine - With the amount of caffeine infused into this formula, you will be sure to feel the difference in the level of energy exerted during each workout. This caffeine load helps to promote the heat shock element and provides a signaling pathway, which results in HSP activation. This HSP Activator is involved in releasing heat shock proteins during exercise. HSPs are proteins included by heat or other stresses that play a role in muscle physiology and are multi-functional.

Amplified Muscle Igniter 4X is designed for athletes who desire to burn more calories, improve physical and mental intensity, and enhance energy and cardio endurance capacity.