Beyond Citrulline: Modern Nitric Oxide Strategies for Repeatable Strength

Nitric oxide support in powerlifting has moved beyond basic citrulline, with newer compounds targeting blood flow, endurance, and repeated output across heavy sets.

multiple performance supplements including citrulline malate, beetroot powder, arginine silicate, sodium nitrate, and Vaso6 arranged beside a loaded barbell in a dark gym setting. Bold text reads ‘Beyond Citrulline: Modern Nitric Oxide Strategies for Repeatable Strength,’ with supporting points about bar speed, recovery between sets, work capacity, and sustaining performance across training sessions.

Nitric Oxide, Updated

Nitric oxide (NO) drives vasodilation—wider blood vessels, better delivery of oxygen and nutrients, and more efficient removal of byproducts between sets. Citrulline still works, but newer approaches aim to extend or amplify that effect rather than replace it.

Nitrate-Based Performance (Beetroot, Nitrates)

Dietary nitrates convert to nitric oxide through a separate pathway than citrulline/arginine. That matters under fatigue, where oxygen availability drops.

What lifters report

More stable output across later sets of squats, benches, and deadlifts
Less drop-off in bar speed during volume work
Improved repeat effort strength without relying on high-stim pre-workouts

This shows up most in higher-rep work and repeated efforts, where fatigue resistance carries value.

Nitrosigine® (Inositol-Stabilized Arginine Silicate)

A more stable arginine form designed for better absorption and longer-lasting NO support.

What lifters report

Faster onset readiness early in the session, with more consistent bar speed from the first working sets
Improved mind-muscle connection on the powerlifts and accessories
Less need to stack multiple NO ingredients

Compared to raw arginine (historically underwhelming), this version appears to stay active longer.

Vaso6™ (Green Tea Extract Fraction)

A newer polyphenol compound targeting endothelial function (how well blood vessels respond).

What lifters report

Improved work capacity and steadier output across sets without relying on heavy stimulants
Shorter recovery between sets, supporting more consistent output across working sets
Works well stacked with citrulline rather than replacing it

Less about short-term sensation—more about maintaining strength and bar speed across the session

Agmatine Sulfate (Revisited)

An older compound seeing renewed use in modern formulas.

What lifters report

Sustained muscle function with less GI discomfort than high-dose citrulline
Improved focus during training sessions
Pairs well with lower-stim or non-stim pre-workouts

Dosing appears to matter—too much can flatten the effect.

Practical Takeaways for Lifters

Stacking beats replacing. Citrulline + nitrates or Vaso6 tends to outperform single ingredients
Match to training style. Nitrates and Vaso6 show more value in volume phases than max-effort singles
Performance is measured by repeatable output—holding strength and bar speed across sets is the real carryover

Nitric oxide support has shifted toward sustaining output across working sets. For powerlifters, that shows up in repeatable strength and stable bar speed deeper into the session.

Exclusive Powerlifting.com content drawing on published research and industry expertise to ensure accuracy and relevance for powerlifters. Certain statements in this article represent the author’s perspective and may not reflect the views of Powerlifting.com.