Science-forward performance support—formulated to power strength, focus, and recovery at the cellular level.

One Stack, Total Coverage
Powerful NAD+ Energy
Feel It in Minutes
NSF tested. GMP certified. USA made.
8-in-1 Stack, One Simple Routine

Customer Reviews

Based on 6 reviews
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a
anthony
I wanted to start hitting the gym more so I decided to give this a try

I wanted to start hitting the gym more so I decided to give this a try. I honestly love it.I feel good working out and even feel better through out the day.

D
Daniel

Love the way it amps you up for a workout ive worked 3rd shift for a long time so my caffeine use has been an issue, GROmuscle is serious

B
Bobby
Very strong and it works in

Very strong and it works in minutes

C
Carl

👍

F
Franco
Gro and l arginine stacked

Stack the both products together. Got extremely vascular and saw some good stamina and strength increase during lifts.

Fuel Every Layer of Performance

Your body runs on ATP, but energy alone isn’t enough. This bundle stacks NAD+ with nitric oxide support to unlock clean cellular output and endurance from the inside out—without relying on stimulants.

Circulation Meets Recovery

L-Arginine and Citrulline improve nitric oxide production, helping blood flow deliver oxygen, hydration, and nutrients where it counts—supporting stamina, muscle repair, and day-to-day performance.

Beyond the Pre-Workout Model

Most formulas flood your system with caffeine. This duo does more. It works with your body’s natural flow to improve performance and long-term health—not just today’s workout.

Quick Answers

What to expect, how it works, and why it’s different.

Learn More

What makes this bundle different from standard supplements?

This stack goes beyond traditional pre-workouts or pump formulas. GROmuscle™ boosts performance through ATP production and blood flow, while L-Arginine Plus supports cardiovascular health, nutrient delivery, and long-term endurance. Together, they promote full-body output, faster recovery, and clean, daily performance without stimulant dependency.

What’s the “flush” sensation I feel?

That warm, tingling feeling is the NAD+ (niacin) flush. It means your blood vessels are opening, circulation is increasing, and the formula is actively delivering nutrients where your body needs them most.

Do I need to cycle on and off?

No. Neither product relies on harsh actives, so there’s no need to cycle. Both are safe for daily use when following the recommended serving.

When should I take each one?

Take GROmuscle™ immediately before your workout for an energy and performance boost. L-Arginine Plus can be taken daily, preferably between meals or on an empty stomach, to support blood flow and recovery.

Will I feel the effects right away?

GROmuscle™ kicks in within minutes—you may feel a warm “flush” sensation, signaling it's working. L-Arginine Plus supports long-term cardiovascular health and stamina; benefits are more noticeable with consistent use.