My evenings have completely changed
I used to be useless after 7pm. Now I have energy into the evenings and actually enjoy time with my family rather than just surviving until bedtime. Stack has genuinely changed my quality of life.
Nour M.
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Amino Acid500mg
Arginine
NITRIC OXIDE BOOSTER & CIRCULATION SUPPORT
Dairy freeGluten freeSoy freeGMO free
$14.99/mo
30-day supply
Key Benefits
1
Supports nitric oxide production for blood flow
2
Promotes cardiovascular health
3
Supports exercise performance and recovery
4
May support healthy blood pressure
Wellness Goals
Recommended Dose
500mg
Take one 500mg capsule daily. For exercise performance, take 30-60 minutes before training. For cardiovascular support, consistent daily use is more important than timing. Can be taken with or without food.
Get your personalized dose⚗️
3rd Party Tested
🩺
Doctor Formulated
🛡️
cGMP Certified
The Details
Why you'll love it
Nitric oxide might be the most underappreciated molecule in your body. It's the signal that tells your blood vessels to relax and widen, improving blood flow to your heart, muscles, brain, and everywhere else. L-Arginine is the raw material your body uses to produce it.
For exercise enthusiasts, better blood flow means more oxygen and nutrients delivered to working muscles, improved endurance, and faster recovery. Studies show arginine supplementation can enhance exercise capacity, particularly during high-intensity efforts where blood flow becomes a limiting factor.
On the cardiovascular side, arginine supports healthy blood pressure by promoting vasodilation — the widening of blood vessels that reduces resistance to blood flow. Research has also shown benefits for circulation in people who spend long hours sitting. It's a foundational amino acid that keeps your vascular system running smoothly.
Research
Clinical Evidence
Key studies supporting Arginine, from peer-reviewed journals.
1
L-arginine lowers blood pressure by 6 points at 4+ g/day
Effect of L-arginine supplementation on blood pressure in adults: a systematic review and dose-response meta-analysis — 2022
2
Arginine helps treat mild to moderate erectile dysfunction
The potential role of arginine supplements on erectile dysfunction: a systemic review and meta-analysis — 2019
Study titles are simplified for readability. Provided for informational purposes — not medical advice.
Transparency
What's Inside
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
Important Information
Contraindications
- blood pressure medication
If you take blood pressure medication, consult your healthcare provider before use, as arginine may enhance their effects.
As with any natural health product, consult your healthcare practitioner. Store in a cool, dry place. Keep out of reach of children. Discontinue use immediately if you experience an adverse event.
What people say
changed my whole routine tbh
used to take like 5 different supplements every morning and always forgot at least two of them. now i take one stack pack and that's it. so much simpler. and the results are actually better. wild.
Hazel B.
The value proposition is actually excellent
I calculated what I was spending on separate supplements, gym supplements, and energy drinks before Stack.
Tim A.
Simple, smart, and it actually works
The packaging is some of the nicest I've seen in wellness. But beyond aesthetics, the product delivers. My energy throughout the day is more stable and I'm recovering faster from workouts. I was genuinely skeptical.
Ashley N.
The inflammation reduction has been significant
I suffer from low-grade chronic inflammation and it affects everything - energy, mood, joint comfort. Stack's personalized formula has noticeably reduced these symptoms over three months. The targeted approach is clearly more effective than generic options.
Eric T.
My husband noticed before I did
About six weeks in my husband said I seemed more like myself - more energy in the evenings, less irritable, sleeping better. I hadn't even consciously registered how much had changed until he said it.
Amara S.
Personalized for you
Not sure if Arginine is right for you?
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