Prime Labs Prime Test L-Arginine bottle — teal bull mascot label, 1500 mg L-arginine for energy, strength and endurance
Hands holding Prime Labs L-Arginine bottle — supercharges workouts with improved blood flow and muscle pumps for every rep
Prime Labs L-Arginine third-party lab test results — L-arginine HCl active ingredient verified, passes microbiological and heavy metal testing
Man performing a barbell deadlift in a gym — Prime Labs L-Arginine elevates athletic performance and physical endurance
Hand holding Prime Labs L-Arginine bottle — directions show take 2 capsules daily, preferably with food, to maximize workouts
Prime Labs L-Arginine supplement facts — 1500 mg L-arginine HCl per serving, registered facility, USA-made and rigorously tested
Prime Labs L-Arginine supplement facts panel close-up — 1500 mg L-arginine HCl per 2-capsule serving, 30 servings per bottle
Prime Labs L-Arginine bottle back label with suggested use — take 2 capsules daily for blood flow, endurance and performance
Muscular man performing a barbell back squat in a gym — Prime Labs men's wellness and performance supplements

L-Arginine

(91)
Increase Energy Wellness
Enhanced Blood Flow
1,500 mg L-Arginine HCl promotes vasodilation for improved circulation, bigger pumps, and better nutrient delivery.*
L-Arginine HCl 1,500 mg
Endurance & Recovery
Supports endurance during workouts, reduces post-exercise soreness, and aids muscle repair between sessions.*
L-Arginine HCl 1,500 mg
Cardiovascular Support
Helps maintain healthy blood pressure and heart function — a foundational amino acid for whole-body performance.*
L-Arginine HCl 1,500 mg
Money Back Guarantee
Free Shipping

Complete Your Stack

Prime Test
Prime Test
$20.69
Prime Test Pro
Prime Test Pro
$35.99
Organic Black Maca
Organic Black Maca
$17.99
Supplement Facts for L-Arginine
Serving Size 2 Capsules
Servings Per Container 30
Nutrient Amount Per Serving % Daily Value
L-Arginine HCl 1500 mg **

Other Ingredients: Hypromellose (Veggie Capsule), Vegetable Stearate, Silicon Dioxide

** Daily Value not established.

3rd Party Tested Non-GMO No artificial ingredients Drug-Free

Upgrade Your Delivery System

L Arginine HCL: Supports cardiovascular health, enhances athletic performance, and promotes muscle growth and recovery*

L-Arginine HCl

Other Ingredients: Hypromellose (Veggie Capsule), Vegetable Stearate, Silicon Dioxide

View Lab Tests

Why Choose Prime Labs

Total System Optimization. Our solutions maximize testosterone, boost stamina, fuel gains and improve recovery. Whether you are moving heavy weight or getting intimate, our goal is to ensure your body never fails a rep. No lag. No excuses. Just raw, calibrated power.

L-Arginine
 Others
Strength 1,500 mg L-Arginine HCl Typically 1,000 mg per serving
Form L-Arginine HCl L-Arginine or L-Arginine HCl
Questions?

We've Got The Answers

L-Arginine supports nitric oxide production, which promotes vasodilation — widening blood vessels for improved blood flow. This means better oxygen and nutrient delivery to working muscles, enhancing endurance, pumps, and reducing exercise fatigue.
Each serving delivers 1,500 mg of L-Arginine HCl in just 2 capsules. That's a solid clinical-range dose for supporting blood flow, exercise performance, and cardiovascular health.
Yes. L-Arginine supports cardiovascular health by promoting vasodilation and healthy blood pressure levels. It aids in maintaining healthy blood circulation and overall heart function, making it a valuable supplement beyond just workout performance.
Take 2 capsules daily, preferably with food. Many users take it 30–60 minutes before a workout to maximize blood flow and pumps during training, but it provides benefits taken at any time of day.
Absolutely. L-Arginine is a great addition to your stack — pair it with Prime Test Pro for testosterone and blood flow support, Pre-Workout for enhanced pumps, or Creatine for strength. It complements virtually any Prime Labs supplement.
Not at all. While it's popular for enhancing workout performance and pumps, L-Arginine supports blood flow, cardiovascular health, immune function, and wound healing. It benefits anyone looking to improve circulation and overall vitality.

Join our Community

Subscribe For The Latest

Take 15% off your first order when you sign up.