This clinically tested, high-intensity pre-training formula has potent ingredients to help magnify energy, alertness, strength, stamina, pumps and free testosterone during workouts.* Nitraflex pre-workout delivers fast, explosive training results for a more powerful body, including energy, stamina, nitric oxide (no) and testosterone levels.* It contains proven muscle building l-citrulline malate, l-arginine, l-arginine alpha-ketoglutarate (akg) amino acids and calcium fructoborate (cfb), a natural, high potency form of boron which has been shown to support free testosterone.*
Ideal for pre-contest prep and lean muscle physique
Explosive energy, heightened focus and an overwhelming urge to tackle any challenge…that s the C4 experience. Millions of people ranging from beginners all the way up to the elite competitors, have relied on C4 to help them turn their ambitions into achievements.
As America s #1 selling pre-workout, C4 Original lives up to its solid reputation with a classic formula for advanced energy, endurance, focus and pumps! But with a new bottle design and more delicious flavor options for you to choose from, you will feel like it s your very first time experiencing the C4 you know and love.
Whether you re just starting a fitness journey or you are striving to reach that next level, C4 Original will help you unlock your full potential.