4.7 · Chosen by label readers across the US (40)
Citrulline Malate + Arginine · 800 mg

Nitric Oxide

Steady Flow. Warmer Hands. Zero Stimulants.

Citrulline malate and arginine in one stimulant-free capsule pair, the precursor chain your body turns into nitric oxide, with every milligram printed on the panel.*

$39.00$49.00−20%/ bottle · 1 Month Supply
  • 01 Two pathways, one capsule800 mg of L-citrulline and L-arginine together
  • 02 Pumps and circulationsupport for blood flow during training and after
  • 03 Citrulline converts to argininewhich is the route the nitric oxide research used
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  • Manufactured in a GMP-certified facility
  • Manufactured in USA
  • Non-GMO
  • No synthetic dyes or unnecessary fillers

Free standard shipping on orders over $59. Orders ship within 1 to 2 business days and arrive in 3 to 7 business days within the United States.

Not satisfied? You are covered by our 60-day money-back guarantee. Just email support@getsuppla.com.

Nitric Oxide
$39.00

As seen in

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Your body builds nitric oxide from arginine, so nearly every bottle on the shelf is an arginine bottle. The catch is what happens on the way in: a large share of an oral arginine dose is broken down in the gut and liver before it ever reaches your blood. Citrulline takes the long way around. It passes the gut untouched, converts to arginine in the kidney, and raises blood arginine more reliably than arginine itself.*

What most bottles do:

  • Arginine only. The panel says arginine and stops there, so most of what you swallow never makes it past first-pass metabolism.
  • No citrulline at all. 22 of the 31 circulation labels we compared skip the precursor that actually survives the gut.
  • A proprietary blend. The milligrams disappear into one total number, so the formula cannot be compared with anything.
  • A caffeinated powder. The lift you feel is the stimulant, not the blood flow, and you cannot take it at night.

How Suppla Nitric Oxide is built instead:

  • L-Citrulline DL-Malate, 400 mg. The malate form, the one the performance research used, not the plain free-form powder.*
  • L-Arginine HCl 350 mg + AAKG 50 mg beside it. Both ends of the nitric oxide chain in the same capsule, every milligram printed.*
  • Stimulant-free, vegan, Non-GMO. No caffeine, no sucralose, no flavoring. A daily circulation habit, not a pre-workout event.

Two capsules a day. That is the whole routine.

1. Warmer hands, livelier legs. Most of our customers notice it in daily life first: on morning walks, on cold mornings, on stairs that used to demand a pause.*

2. The workout pump. If you train, you will likely feel it there too: fuller, warmer muscles, the reason citrulline malate became a gym staple.*

3. Nothing else comes along. No jitters, no crash, no racing heart at 9pm. Stimulant-free means the only thing working is the blood flow support.*

What this formula does not do: it is not a blood pressure medication and it does not treat any condition. If you take blood pressure medication or nitrates, talk to your doctor before starting; the combination is exactly what a doctor should supervise.

Nitric oxide support works with your circulation day by day. This is the arc most people describe on two capsules daily, without skipping.

Days 1-7 · The Settling Phase. The habit locks in. Two capsules with water, any time of day, training day or not.*

Weeks 1-3 · The First Signals. Many notice the training pump first, then the everyday things: warmer extremities, livelier legs on stairs and walks.*

Weeks 3-8 · The Steady Build. Daily amino support is cumulative. This is the window where the routine starts feeling like a baseline, not an experiment.*

Weeks 8-12 · The Habit. The routine is invisible now. This is why the 3-month supply is the most popular choice.*

Consistency is the mechanism. Give it a full 60 days; the guarantee covers exactly that.

You train and want the pump without another scoop of caffeine. Or you are past 45 and circulation is the quiet thing you have started thinking about: cold hands, tired legs, the long sit at a desk.

You want the precursor that survives digestion, in the form the research used, next to the arginine it converts into, with every milligram printed. And you want it stimulant-free so it fits any hour and any stack.

Whether you are 30 and chasing a pump or 65 and chasing warmer feet, this is built for the daily habit.

Not for you if you want a caffeine hit, or if you take blood pressure medication or nitrates and have not cleared it with your doctor. We would rather you know before you buy.

Every bottle is manufactured in the USA. Orders ship within 1 to 2 business days and most arrive in 3 to 7 business days anywhere in the US. You get a tracking number by email the moment it ships. Subscriptions ship free.

Take Nitric Oxide daily for 60 days. If your training and your circulation do not feel different, email support@getsuppla.com. Full refund. No return required, no questions asked.

You have probably already spent money on arginine bottles that never made it past your gut, or powders that were mostly caffeine. This time the risk is on us. There is no downside to trying it properly.

*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. Individual results vary.

Real routines

Loved by label readers across the US

Marcus J.
“Same lifts, better pump, and I can still sleep because there's no caffeine hiding in it. That combo is rarer than it should be.”Marcus J. · 44
Glen H.
“My hands used to go cold on the morning nine. A month in, they don't. Two capsules with breakfast, simple as that.”Glen H. · 62
Carol M.
“My hands were the first thing to feel winter. Six weeks in, I'm the one turning the thermostat down. I read the panel first, that's why I picked this one.”Carol M. · 58
What's inside

The Chain, Printed End to End.

The precursor that survives digestion, the amino it becomes, and zero stimulants hiding the difference. Two capsules a day.

Pillar 1 · The precursor

Citrulline malate, 400 mg

Citrulline passes the gut untouched and converts to arginine in the kidney, raising blood arginine more reliably than arginine itself. Ours is the DL-malate form, the one the performance research used.*

Pillar 2 · The chain

Arginine, both forms, 400 mg

L-Arginine HCl 350 mg plus AAKG 50 mg in the same capsule. Citrulline feeds arginine, arginine feeds nitric oxide. Carrying both covers the chain from either end.*

Pillar 3 · The proof

No proprietary blend

Every milligram is on the panel: 400 + 350 + 50. A blend total tells you nothing; a printed number can be compared with the research and with the bottle next to it.

Pillar 4 · The absence

Stimulant-free, vegan

No caffeine, no sucralose, no flavoring system. A cellulose capsule, rice flour, and the aminos. Take it at night, on rest days, or alongside anything else in your routine.

*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. Individual results vary.

78%
Positive customer feedback
From Suppla customers across the US
800 mg
Named aminos per serving
Citrulline malate + arginine, printed
60 days
Money-back guarantee
No return required, no questions asked
How to take it

2 Capsules. Any Time. That's It.

No scoops, no flavoring, no caffeine window to plan around. Two capsules with water, every day.

  1. 1
    Take 2 capsules dailyWith 6-8 oz of water, with or without food.
  2. 2
    Time it your wayBefore a workout for the pump, or with breakfast as a daily circulation habit. stimulant-free means any hour works.
  3. 3
    Give it 3 to 8 weeksAmino support builds with daily use; the everyday signals tend to follow the training ones.*
  4. 4
    Stay consistent for 90 daysCirculation support is a habit, not an event. that is why the 3-month supply is the most popular.
From people who read the panel

Real routines. Real words.

4.7 from 40 verified buyers

E
Earl T.Age 71 · Pennsylvania★★★★★

“I walk two miles every morning, rain or shine. Around week five my legs stopped feeling heavy on the hills and my hands stay warm the whole loop. My doctor knows what I take and had no objection.”

G
Glen H.Age 62 · Michigan★★★★★

“Cold hands on the golf course every fall, like clockwork. A month on these and my hands stay warm through the round. My wife noticed before I said anything.”

C
Carol M.Age 58 · Oregon★★★★★

“Cold hands and feet every winter since my forties. Half this category is caffeine powder; this is the opposite, two aminos and every milligram printed. Six weeks in, my hands finally stay warm.”

V
Victor P.Age 55 · New Jersey★★★★★

“Desk job, feet used to fall asleep by 3pm. Sounds small but that stopped around week three. I take two with lunch and that's the whole ritual.”

Suppla Nitric Oxide vs. Everything Else on the Shelf

Not an arginine bottle your gut intercepts. Not a blend that hides the milligrams. Not a caffeine powder selling you the buzz. The precursor chain, printed.

Suppla Nitric OxideArginine-only bottlesProprietary blendsCaffeinated powdersDoing nothing
Citrulline, in the malate form✓✗~✗✗
Arginine in the same capsule✓✓~✗✗
Every milligram printed, no blend✓✓✗✗✗
Stimulant-free, take it any hour✓✓~✗✗
Survives first-pass metabolism✓✗~~✗
Vegan, Non-GMO, manufactured in USA✓~~✗✗
60-Day money-back guarantee✓✗✗✗✗
Feed the Flow →
60-Day Guarantee · Ships within 1-2 business days · Cancel anytime
Questions

What to know before you start.

Because of first-pass metabolism: a large share of oral arginine is broken down in the gut and liver before reaching your blood. Citrulline passes through untouched and converts to arginine in the kidney, which is why it raises blood arginine more reliably. We carry both, so the chain is covered from either end.*
The performance research that made citrulline famous used citrulline malate, the amino bound to malic acid, not plain free-form citrulline. Form is the difference between the ingredient in the trials and the ingredient in your capsule.
None. No caffeine, no sucralose, no flavoring. Circulation support is a daily habit, not a pre-workout event, so you can take it at night, on rest days, or with your existing routine.
Two capsules daily with water, whenever suits you. Train in the evening? Take them before the session. Just building the circulation habit? Breakfast works. Consistency matters more than timing.
Gym-goers usually notice the pump first, within the first weeks. The everyday signals, warmer hands, livelier legs, tend to follow with daily use. Give it a full 60 days, which is exactly what the guarantee covers.*
Yes: vegan, Non-GMO, gluten-free and allergen-free, all certified for this formula. The capsule is plant cellulose, and the only other ingredient is rice flour.
If you take blood pressure medication or nitrates, talk to your doctor before starting: nitric oxide support and those medications work on the same system, and that combination should be supervised. That is not fine print; it is the honest answer.
Email support@getsuppla.com within 60 days and we refund every penny. No return required, no questions asked. The risk is on us.

Your circulation works every hour. Support it the same way.

People across the US chose citrulline in the studied malate form, arginine beside it, every milligram printed, zero stimulants. Two capsules a day. That is the whole routine.*

“Steady Flow. Warmer Hands. Zero Stimulants.”

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60-Day Guarantee · Cancel anytime

Try Nitric Oxide risk-free for 60 days.

Take it daily for up to 60 days. If your training and your circulation do not feel different, email support@getsuppla.com and we refund every penny. No returns required. 78% of Suppla customers report a positive experience; if you are not one of them, you do not pay.

No returns required No questions asked One email is enough