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

Clinically Dosed, No Blends
Powerful NAD+ Energy
Feel It in Minutes
NSF tested. GMP certified. USA made.
8-in-1 Stack, One Simple Routine

Customer Reviews

Based on 366 reviews
75%
(274)
8%
(29)
5%
(18)
4%
(16)
8%
(29)
A
Alison

A great supplement!

M
Marilyn Wood
Helps with my overall health

Helps with my overall health.

A
Anonymous
I’m 79 take it every day for energy and mental

I’m 79 take it every day for energy and mental clarity

N
Nick Dunn
It’s not been good this time

It’s not been good this time around

A
Aaron Presser
Love the pump you get on the GROmuscle

Love the pump you get on the GROmuscle. Wish it came in the container format so I can buy a bigger bulk size. New favorite preworkout. Will say I am not a big fan of the Raspberry flavor for the Arginine.

Why Cellular Energy Matters

Your body runs on ATP. We include NAD+ precursors to support mitochondrial health, helping you recover faster, perform longer, and feel more energized—without overstimulation.

The Circulation Advantage

L-Arginine and Citrulline work together to boost nitric oxide, enhancing blood flow. Better circulation means more oxygen and nutrients to your muscles—so you can push harder with less fatigue.

Bathing Your Muscles in Nutrients

The old method of spiking heart rate and constricting blood vessels has met its match. We deliver nutrients where they matter—deep into muscle and connective tissue for sustained performance.

Quick Answers

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

Learn More

What is GROmuscle™ and how does it work?

GROmuscle™ is a performance formula powered by NAD+ and L-Arginine to improve blood flow, deliver nutrients to muscle tissue, and support ATP production. Unlike stimulant-heavy pre-workouts, it energizes through enhanced circulation—not by overloading your nervous system.

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 off GROmuscle™?

No. GROmuscle™ is designed for daily, repeatable use without cycling. The ingredients support natural energy systems and recovery without overreliance on stimulants.

What makes GROmuscle™ different from typical pre-workouts?

Most pre-workouts force the body into overdrive with high caffeine and vasoconstriction. GROmuscle™ works with your physiology—flooding muscle tissue with nutrient-rich blood through NAD+, L-Arginine, and ATP-supporting compounds for sustained output.

Can I take GROmuscle™ even if I’m not training?

Yes. Many use it for focus, clarity, and clean energy on long workdays or physically demanding tasks. It’s built for performance—wherever yours lives.