L-Arginine 500 mg — Cardiovascular & Nitric Oxide Support (250 Caps)
L-Arginine 500 mg provides a generous 250-capsule supply of free-form L-arginine — a semi-essential amino acid and the primary precursor to nitric oxide (NO) synthesis in the body.* Nitric oxide relaxes blood vessel walls, promoting healthy circulation, blood pressure support, and cardiovascular function.* This value-size bottle ensures sustained supply for ongoing cardiovascular and performance protocols.*
Key Benefits
- Primary substrate for nitric oxide — promotes healthy vasodilation and circulation*
- Supports healthy blood pressure within the normal range*
- Stimulates growth hormone secretion for muscle building and recovery*
- Supports ammonia detoxification via the urea cycle*
- Promotes male and female sexual function through improved blood flow*
Who Is This For?
L-Arginine 500mg (250 caps) is ideal for those who want a bulk supply of L-arginine for ongoing cardiovascular support, athletes focused on performance and blood flow, men supporting sexual health, individuals with hypertension, and those following comprehensive cardiovascular wellness protocols under practitioner guidance.
Frequently Asked Questions
Q: What is the ideal dose of L-arginine for cardiovascular support?
A: Clinical studies on blood pressure and cardiovascular health typically use 3–6g/day. This 500mg capsule allows flexible dosing from 1 to 6+ capsules per day under practitioner guidance.
Q: Does L-arginine cause any side effects?
A: At high doses, L-arginine can cause GI discomfort, low blood pressure, and — importantly — may trigger herpes simplex outbreaks. Those with cold sores should balance arginine with L-lysine.
Q: Is this safe with nitrate medications?
A: L-arginine may potentiate the blood pressure-lowering effects of nitrate medications. Consult your cardiologist or physician before combining.
Best For
L is best for everyday wellness, nutritional gaps, and whole-body health support. It is especially well-suited for individuals seeking a professional, practitioner-vetted supplement as part of a holistic wellness routine.
How to Use
Take as directed on the label or by your healthcare practitioner. Always follow the label directions or guidance from your healthcare provider. Do not exceed the recommended dose.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

