Extreme Nitric Stack

Extreme Nitric Stack

An 8-In-1 Ntric Oxide Vasodilator Muscle Stack*
Formulated To Target Every Aspect Of Muscle Growth With No Proprietary Blends Or Fillers*
8.0  out of 10  (2 Reviews)

Product Overview

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Third Party Lab Test Results

Please enter the lot number found on the bottom of your bottle of NutraBio supplements.


What are 3rd Party Lab Tests?

Each and every single ingredient that NutraBio puts in their supplements are rigorously tested for quality and purity. NutraBio is now publicly releasing the results of 3rd party lab tests conducted on their products, so that you can see for yourself how your supplements checked out!

View the date your item was tested, the results of the test, and even the name of the chemist that conducted the test.
Full transparency!

You can view a copy of the results by entering the lot number, located on the bottom of each bottle of NutraBio supplements into the form above.


  • 8-in-1 Nitric oxide vasodilator muscle Stack
  • 100% Active ingredient
  • Targets every aspect of muscle growth*
  • Effective dosages of every ingredient
  • No proprietary blends, fillers or excipients

The Most Powerful ALL-IN-ONE Muscle Growth Stack Available!*

Extreme Nitric Stack (ENS) will give you explosive gains in muscle size, hardness, strength and endurance. ENS is a no-nonsense 8-in-1 extreme nitric oxide and muscle growth complex that gives you insane workouts and huge gains in muscle growth. It is the most powerful nitric oxide vasodilator and cell volumizing formula available. It's the ultimate proven formulation for boosting nitric oxide and creating an environment for muscle growth.*

Without Compromise Since 1996

Founded in 1996, NutraBio is the original No Proprietary Blend, No B.S. honest brand. 15 years ago we revolutionized the supplement industry by introducing 4 quality commitments:

  1. NO proprietary blends and full label disclosure
  2. NO fillers, excipients, or additives (except flavor)
  3. Full efficacious dosages of every active ingredient
  4. Manufacturing our own products to control every aspect of quality.

Two decades ago we set the goal of providing our customers with the most effective, clean and honest supplements available. Since that very first day, we have led the charge in supplement innovation with science-backed therapeutic doses and full label disclosure.

We manufacture our products in our own FDA registered and audited facility. We are GMP certified and manufacture to exceed 21 CFR Part 111 cGMP regulations. We don't compromise on quality so you don't have to compromise on results.

8-in-1 Nitric Oxide Vasodilator Muscle Stack

Extreme Nitric Stack is a no-nonsense 8-in-1 extreme nitric oxide and muscle growth complex that supercharges muscle size, hardness and strength. Extreme Nitric Stack is the most powerful nitric oxide vasodilator and cell volumizing formula available and is the only product that includes that includes an effective dosage of the alpha-ketoglutarate version of arginine, ornithine, and creatine alon with glutamin, taurine, citrulline and beta alanine.* No BS proprietary blends hiding the real dosage, we show you exactly what's in this product.

Includes Effective dosages of every ingredient

Extreme Nitric Stack contains no binders, sugars, maltodextrin, dextrose or fillers. It's an industry practice to use theses cheap fillers to dilute products to bring cost down. We refuse to. Like all NutraBio products, Extreme Nitric Stack contains only 100% pure active ingredients for maximum muscle growth.* Extreme Nitric Stack is pharmaceutical grade, ultra-pure for maximum bioavailability, and manufactured by us in the United States in our FDA/GMP compliant facility. By manufacturing our products, we can control all aspects: label claim, dosage control, ingredient identity and purity.

Benefits of NutraBio Extreme Nitric Stack

  • Get continuous pumps and rock-hard muscle!*
  • Increase baseline nitric oxide!
  • Speed muscle repair and recovery!*
  • Supports protein synthesis and load capacity!*
  • Reduce lactic acid for more reps and intensity!*
  • Improve muscularity, strength, endurance, and volumize muscle cells!*

Alpha Ketoglutarate Amino-transport for maximum bioavailability

The combination of these four active ingredients, all individually bonded to the Alpha-Ketoglutarate (AKG) transport molecule work synergistically with Beta Alanine and Taurine to create a phenomenal environment for muscle growth!* Since AKG is absorbed by the intestines, the possibility of gastrointestinal problems associated with other forms of these nutrients are eliminated, and because of its unique transport system, it does not need the help of sugar transporters like other products use. EXTREME NITRIC STACK rushes the key muscle building nutrients creatine, glutamine, arginine and ornithine directly into muscle cells for unsurpassed results.*

Includes effective dosages of every ingredient

EXTREME NITRIC STACK contains only pure active ingredients and none of the cheap additives and fillers that manufacturers lace their products with to bring their cost down. EXTREME NITRIC STACK gives you pure active Arginine-AKG-KIC, Ornithine-AKG, Creatine-AKG and Glutamine with pure Taurine and Beta Alanine. These highly bioactive muscle building nutrients are seen in many products on the market but rarely in their effective dose. This is a common practice in the sports supplement industry known as "window dressing" your product. Manufacturers put small amounts of expensive active ingredients in their product so they can list it on the label, then fill the bulk of their product with cheap substitutes and fillers like maltodextrin and dextrose. Like window dressing a mannequin, the product looks good on the outside but on the inside, where it counts, there's nothing there. Don't fall into that trap, with EXTREME NITRIC STACK you're guaranteed explosive gains in muscle size, hardness, strength and endurance.* We use the freshest and purest active ingredients available and we manufacture in our own facility in New Jersey to FDA/GMP specifications.

For best results

The effectiveness of the Arginine in this stack is greatly diminished if foods have been consumed that cause other amino acids or significant amounts of insulin to be present in the bloodstream along with the arginine. That is why arginine should be taken on an empty stomach at least one hour before or after a meal. Not recommended for continuous, high-level use for more than 90 days.

Ratings & Reviews

Extreme Nitric Stack
Overall Rating
2 Ratings
Verified Buyer Rating
2 Ratings
Average Flavor Rating
1 Flavors
Top Rated Flavor
Kiwi Strawberry
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Aug 05, 2020
Verified Buyer
  • 4 Kiwi Strawberry

Ugh, the taste leaves something to be desired. Kinda tastes like Coppertone suntan lotion! Of course i do mix it with a Juiced Monster, the mango loco flavored one. When I drink it I think about spending the day at the beach, lol. Can't really tell much difference in the pump, just a little tighter in the sleeves. It would be great to offer a no flavor one, then I can mix it with my usual morning drink.

Jun 28, 2019
Verified Buyer
  • 9 Kiwi Strawberry

Love this here is why....first the brand 3rd party testing and correct!! Dosing. The flavor on this is great for the category it is in, I use this preworkout it covers a lot of bases like correct dosing covers it really is about three different suppz.

1 Size
30 Servings
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2 Flavors
Blood Orange
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Price: $42.99  ($1.43 / Serving)
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Formulated To Target Every Aspect Of Muscle Growth With No Proprietary Blends Or Fillers*

What's in NutraBio Extreme Nitric Stack

30 Servings Blood Orange
Serving Size: 1 Scoop (20.57 grams)
Servings Per Container: 30
Amount Per Serving % DV
L-Glutamine (Kyowa Quality™)(HPLC) 4 g
AAKG (arginine alpha-ketoglutarate 2:1)(HPLC) 3.5 g
PharmaPure™ Creatine Monohydrate (micronized, HPLC) 3 g
L-Leucine (naturally fermented - vegan)(HPLC) 2.5 g
Taurine (HPCL) 2 g
Beta Alanine (CarnoSyn®)(HPLC) 1.6 g
L-Citrulline (fermented)(HPLC) 1 g
OKG (ornithine alpha-ketoglutarate 2:1)(HPLC) 850 mg
Creatine MagnaPower® (magnesium creatine chelate)(HPLC) 500 mg
† Daily Value (DV) not established.
Other Ingredients:
Flavoring (malic acid 900mg, natural flavoring 550mg, sucralose 100mg, acesulfame potassium 20mg), Color (beta carotene 40mg, anatto powder 10mg).

Directions For Extreme Nitric Stack:

Suggested Use: Take 1 serving of Extreme Nitric Stack (ENS) mixed into 10 ounces of water, once daily on an empty stomach.

On workout days: If using ENS as a pre-workout, take 1 serving 30-45 minutes prior to your workout. If using an alternate pre-workout product, take ENS at least 4 hours before or after your pre-workout. Drink at least 32 ounces of additional water per day when using this product. 

Warnings: NOT INTENDED FOR USE BY PERSONS UNDER THE AGE OF 18. KEEP OUT OF THE REACH OF CHILDREN. If you are pregnant, breast feeding, have known medical conditions (including kidney or liver disease) or are taking prescription or OTC medication(s) consult with your health care practitioner before using this product. Do not use if you are at risk or are being treated for high blood pressure, diabetes, hypoglycemia, myocardial infarction (heart attack), liver, thyroid or psychiatric disease.

* 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.