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

Clinically Dosed, No Blends
Nitric Oxide Support
Daily Use Promotes Recovery & Circulation
NSF tested. GMP certified. USA made.
Daily Heart & Vein Health

Customer Reviews

Based on 380 reviews
75%
(286)
8%
(29)
5%
(19)
4%
(16)
8%
(30)
A
Alex

A really great product

C
Cory Cook
Holy F-in

Holy F-in Sh!t!!!

E
Eric Pratt
I had a horrible experience with the product

I had a horrible experience with the product... way too much niacin in it, I turn super red, skin painful to touch even my clothes touching hurt! Will not recommend to anyone if I could do no stars I would

J
James Scarola
Works

Works well

S
Sharon V
I love GroMuscle! Hands down the best preworkout

I love GroMuscle! Hands down the best preworkout I’ve ever taken

Why Circulation Matters

Your cardiovascular system powers everything—from endurance to recovery. L-Arginine Plus helps increase nitric oxide for better blood flow, oxygen delivery, and total-body performance.

The Dual-Path Advantage

L-Arginine and L-Citrulline work together to support nitric oxide production. One acts fast, the other sustains results—so you feel the benefits longer.

Nutrients That Get Absorbed

We use AstraGin® to enhance amino acid uptake, so more of each dose actually gets used. That means better support for your heart, muscles, and blood vessels—without filler or waste.

Quick Answers

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

Learn More

What does L-Arginine Plus help with?

L-Arginine Plus supports circulation, cardiovascular health, stamina, and recovery by promoting nitric oxide production in the body.

When should I take it?

Take L-Arginine Plus once per day, ideally on an empty stomach or between meals, to support optimal absorption and nitric oxide production.

Will I feel it working?

Most users notice improved endurance, better recovery, and smoother energy throughout the day—but it’s designed to support long-term performance as much as immediate effects.

What makes L-Arginine Plus different from other circulation supplements?

It combines L-Arginine and L-Citrulline for fast and sustained nitric oxide support, and includes AstraGin® to enhance absorption—so your body uses more of each dose.

Can I take this with GROmuscle™?

Yes. They’re designed to work together. GROmuscle™ is a performance-driven pre-workout, while L-Arginine Plus supports daily circulation, vein health, and cardiovascular function.