Nitric Oxide
Daily nitric oxide support for healthy circulation: L-citrulline and L-arginine, the amino acids your blood vessels use to relax, widen and keep blood moving.
The molecule that keeps your vessels open
Nitric oxide is the signal that tells the smooth muscle around your blood vessels to relax, so the vessels widen and blood, oxygen and nutrients move more freely. Your body makes nitric oxide from the amino acid L-arginine, but arginine swallowed on its own is mostly broken down before it can work. L-citrulline slips past that, converts to arginine in the kidneys, and raises nitric oxide more reliably than arginine itself. Easier circulation is the point, and it matters for your heart, your muscles and your stamina alike. No stimulants, no jitters.
Endurance runs on blood flow
Every hard effort depends on getting oxygen-rich blood to working muscles and clearing waste from them. Nitric oxide widens the vessels that do exactly that, which is why the aminos behind it are studied for endurance and recovery. In controlled trials, L-citrulline improved how efficiently muscles use oxygen and eased the blood-pressure and arterial response to exercise. Take it daily, not just on training days, because circulation support builds with consistency rather than a single dose.
Studied, not just marketed
L-citrulline and L-arginine are among the best-studied nutrients for circulation and blood pressure. Here is what the trials show.
Summaries describe published research on the ingredient, not on this specific product. Individual results vary.
Look after the plumbing, quietly
Circulation is easy to ignore until it is not. For people carrying a demanding job into midlife, a stimulant-free way to support healthy blood flow and blood pressure already in the normal range is a sensible daily habit, the kind of quiet, foundational care that pays off over years rather than by lunchtime. One important note: because nitric-oxide support lowers blood pressure, anyone already on blood-pressure, nitrate or ED medication should talk to their physician before starting.
Why Dr. Elizabeth stocks this
"This is the same clean citrulline-and-arginine base I like, framed for circulation rather than the gym. Nitric oxide is genuinely central to vascular health, and citrulline is the smarter way to raise it than arginine alone. I am careful with one thing: it can lower blood pressure, which is welcome for many people but not for someone already on blood-pressure or nitrate medication without a conversation first. Used sensibly, it is a reasonable, stimulant-free way to support healthy blood flow."
What to expect
Take it daily with 6 to 8 oz of water, following the label. Unlike a pre-workout, this one is meant for every day, not only training days.
Circulation support builds with consistent daily use. Any changes are gradual and steady rather than a sudden hit.*
Vascular support is a long-game habit. Keep it daily, alongside movement, a good diet and whatever your physician advises.
The details
Ingredients, suggested use & label facts
Nitric Oxide is designed to support healthy circulation and muscle growth, making it a great addition to your fitness or wellness routine. The formula includes L-Arginine Alpha-Ketoglutarate, known for its ability to promote normal blood flow and nutrient delivery to muscles, contributing to exercise performance.*
L-Arginine Hydrochloride and L-Citrulline DL-Malate work together to further support blood flow and endurance. These ingredients help your body produce nitric oxide, which aids in maintaining healthy circulation and muscle function. Whether you're looking to enhance your workout or overall wellness, Nitric Oxide offers versatile benefits.*
With just 2 capsules a day, this supplement is convenient and easy to incorporate into your daily routine. Take steps toward supporting normal circulation, muscle growth, recovery after exercise, and overall health with Nitric Oxide.*
Ingredients: L-Citrulline DL-Malate (400 mg), L-Arginine Hydrochloride (350 mg), L-Arginine Alpha-Ketoglutarate (50 mg), Vegetable Cellulose (Capsule), Brown Rice Flour.
Manufacturer's country: USA
Product amount (oz/lbs/g): 60 capsules / 2.5 oz / 0.15 lbs / 70 g
Gross weight (oz/lbs/g): 2.4 oz / 0.15 lbs / 68 g
Suggested use: As a dietary supplement adults take two (2) capsules daily. For best results, take with 6-8 oz (177-237ml) of water or as directed by healthcare professional.
Warning: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. KEEP OUT OF THE REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.
*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.
Quality & testing
Made in the USA in a GMP-compliant, FDA-registered facility. A Certificate of Analysis is available for every product on request, email us and we will send it. Nothing on this shelf is stocked until Dr. Elizabeth has reviewed the formula and its label.
Shipping & returns
Orders ship from the USA within 1-3 business days. Free shipping on orders over $100. If a formula is not working for you, email us within 30 days of delivery for a refund, see our refund policy for details.
Good questions
How does it support circulation?
Your body makes nitric oxide, which relaxes and widens blood vessels so blood flows more easily. This stack supplies L-citrulline and L-arginine, the amino acids that pathway runs on, with citrulline doing most of the work because it survives digestion.
Is there any caffeine or stimulant?
No. NITRICFLOW is stimulant-free. It works on blood vessels, not on your nervous system, so there are no jitters and it will not affect your sleep. You can take it morning or evening.
Can it help my blood pressure?
In research, these aminos supported healthy blood pressure. This is a supplement, not a treatment. If you have high blood pressure or take any blood-pressure, nitrate or ED medication, do not use it as a substitute and speak to your physician first, because it can add to their blood-pressure-lowering effect.
When and how much should I take?
Take it daily with a glass of water, following the dose on the label. Because it is for circulation rather than a workout, consistency day to day matters more than timing it around exercise.
Who should not take it?
Do not use it if you are pregnant, nursing, under 18, before surgery, or if you take blood-pressure, nitrate or erectile-dysfunction medication. Check with your physician first if you have a heart condition or take any medication.
