Norvaline
performance
Arginase inhibitor that may prolong nitric oxide production for better pumps.
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Benefits
Dosage
Typical Dose
100-200mg pre-workout
Upper Limit
100-400mg
Timing
Pre-workout
Forms & Bioavailability
Powder
Standard absorption
Capsule
Standard absorption
Side Effects
Interactions
Research Summary
Mechanism of arginase inhibition is established in vitro. Human performance studies are very limited. Some safety concerns raised in a 2019 study regarding potential neurotoxicity at high doses.
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The Bottom Line on Norvaline
Norvaline is emerging in research with limited but interesting evidence.It is most commonly used for inhibits arginase to preserve arginine and may prolong nitric oxide production. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Norvaline
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