Stim-free doesn't mean less effective. It means smarter. Iron Surge Stim-Free Pre-Workout is built for athletes who want real performance without the side effects that come with heavy stimulant use. Better sleep, cleaner energy, and a formula you can actually trust.
Benefits to Health & Sleep
- Train any time, sleep any time. No caffeine means no lying awake at midnight after a late session. Your training schedule doesn't have to dictate your sleep schedule.
- No jitters. No anxiety. Heavy stimulants can spike your heart rate and leave you feeling wired and on edge. Stim-free eliminates that entirely. Just clean, focused energy.
- No crash. The energy drop that follows a caffeine-heavy pre-workout is real. With Iron Surge Stim-Free formulas, what you feel during your session is what you feel after. There's no cliff to fall off.
- Heart rate and blood pressure friendly. Ideal for individuals who are mindful of cardiovascular stress or sensitive to stimulants. You get the performance without the strain.
Gym Benefits
Both Iron Surge Stim-Free formulas are built to perform, but each one is engineered with a distinct purpose. Here's what each formula brings to your training.
Pineapple Annihilation & Poppin Cherry — Pump, Focus & Endurance
- The pump. Citrulline Malate at 5,000mg boosts nitric oxide production, widening blood vessels so nutrients and oxygen reach your muscles more effectively. The result is fuller, harder muscles and a pump that lasts the entire session.
- Less fatigue. Beta-Alanine at 2,000mg buffers lactic acid buildup in your muscles which is the chemical responsible for the burn that forces you to stop. More buffering means longer sets and more output before fatigue wins.
- Smooth, stimulant-free focus. Alpha GPC and L-Theanine work together to sharpen your mind-muscle connection and keep you mentally locked in without caffeine, without jitters, without a crash.
- Full-body performance support. Betaine Anhydrous supports cellular hydration and power output, Taurine regulates fluid balance, and a complete electrolyte blend keeps you fueled from the first rep to the last.
- Stack it your way. Zero caffeine means you control your stimulant intake. Run it clean, or stack it with your own caffeine source. Either way it's going to work.
Cherry Limeade — Strength, Recovery & Endurance
- More strength and power. Creatine Monohydrate at 5,000mg is the most researched performance ingredient in sports nutrition. It fuels explosive power, supports progressive strength gains, and speeds up ATP replenishment between sets so you can keep pushing.
- Muscle preservation. L-Glutamine at 3,000mg protects lean muscle tissue during intense training and accelerates recovery — so you come back to the next session ready to go harder.
- Less fatigue. Beta-Alanine at 1,500mg buffers lactic acid buildup, extending your endurance and letting you push past the point where the burn usually stops you.
- Sharp mental drive. Acetyl L-Carnitine HCL and N-Acetyl Tyrosine support focus, motivation, and cognitive performance under physical stress, keeping your head in the game when your body wants to quit.
- Sustained hydration. Magnesium Citrate and Potassium Aspartate keep your muscles contracting properly and your fluid balance dialed in throughout the session.
One Goal. Two Formulas.
Whether you're chasing the pump with Pineapple Annihilation or Poppin Cherry, or building strength and recovering faster with Cherry Limeade. Both formulas are fully transparent, clinically dosed, and built without proprietary blends. You know exactly what you're putting in your body and exactly why.