Nitrates+

199 reviews
Multi source nitrate matrix
Quantity: 90 capsules / 30 servings

Premium nitrate formula, combining 3 nitrate sources with L-arginine that increases endurance and power output in sprints.

  • Improves blood flow
  • Reduces oxygen cost of exercise
  • Delays fatigue during exercise
  • Increases time to exhaustion
  • Supports faster recovery

Regular price€24.99 Sale price€19.99Save €5.00

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Nitrates+

Nitrates+

€24.99 €19.99

Nitrates+ is a highly-efficient supplement designed to increase endurance. By widening your blood vessels, it allows more oxygen and nutrients to feed your muscles, resulting in a noticeable performance boost.

Combining three natural nitrate sources — beetroot, red spinach, and arugula (rocket) extracts — with L-arginine HCL, Nitrates+ enhances nitric oxide production. This results in improved blood flow, more efficient oxygen utilization (indirectly boosting VO2 max), and reduced fatigue.

Why L-Arginine HCL? Arginine HCL is a key amino acid involved in nitric oxide synthesis, further boosting circulation and enhancing oxygen delivery during training.

Increase endurance by delivering more oxygen to your muscles, faster!

  • Improves blood flow
  • Reduces oxygen cost of exercise
  • Delays fatigue during exercise
  • Increases time to exhaustion
  • Supports faster recovery

Take 3 capsules with water approximately 30 minutes before exercise.

On non-training days, take 3 capsules in the first half of the day.

Attention! People who take medication for heart conditions or have an allergy to nitrates or nitrites should not take this product!

 

Per serving (3 capsules)

RDA*

Beta vulgaris extract 10:1

500 mg *

L-Arginine HCL

500 mg *

Red spinach extract (9% nitrates)

400 mg *

Arugula extract (10:1)

250 mg *

Food supplement. Ingredients: Beta vulgaris, L-Arginine, Red spinach extract, Arugula extract. Other ingredients: vegan capsule, lubricant, magnesium stearate. The product can contain oats, barley, wheat, fish, milk, and soy. Net quantity: 90 capsules. 

What is Nitrates+?
Nitrates+ is a nutritional supplement designed to improve endurance performance, increase power output, and enhance recovery by supporting blood flow and nitric oxide production during exercise.

Who should use Nitrates+?
Nitrates+ is intended for endurance athletes who want to improve oxygen delivery, delay fatigue, and boost performance in sprints, long sessions, or races. It can also support faster recovery after intense workouts.

How does Nitrates+ work?
Nitrates+ combines beetroot, red spinach, and arugula extracts with L-arginine HCI to increase nitric oxide production. Nitric oxide relaxes blood vessels, improving circulation and oxygen delivery to muscles. This can enhance exercise efficiency, reduce oxygen cost, delay fatigue, and increase time to exhaustion.

When should I take Nitrates+?
On training or race days, take 3 capsules of Nitrates+ with water about 30 minutes before exercise. If you have two exercise sessions in the same day, take the Nitrates+ dosage before the first session. On non-training days, take 3 capsules in the first half of the day.

What do the ingredients in Nitrates+ do?
Nitrates+ contains a blend of ingredients that work together to improve endurance performance.

  • Beta vulgaris (beetroot) extract: Natural nitrate source to improve blood flow and endurance.
  • Red spinach extract: Provides nitrates to enhance nitric oxide production and delay fatigue.
  • Arugula extract: Additional nitrate source to support circulation and oxygen delivery.
  • L-Arginine HCL: Amino acid involved in nitric oxide synthesis, boosting vascular function and nutrient delivery to muscles.


Are there allergens in Nitrates+?

Nitrates+ may contain traces of oats, barley, wheat, fish, milk, and soy. 

Is Nitrates+ vegan?
Yes. Nitrates+ uses vegan capsules and contains no animal-derived ingredients.

Does Nitrates+ contain caffeine or stimulants?
No. Nitrates+ works through nitric oxide production and improved blood flow, not stimulants.

Can I stack Nitrates+ with other supplements?
Yes. Nitrates+ can be safely combined with most fueling gels, drinks, protein powders, vitamins, and recovery products. It can be safely taken with L-Carnitine Tartrate, Fusion, Absolute, Nitro Boost, and Cordyceps.
However, you should always check for overlapping ingredients and consult a healthcare professional if combining multiple supplements.

Are nitrates harmful for the body?
No, nitrates from vegetables are not dangerous if consumed in normal amounts. The risk exists only for infants (up to 6 months). Nitrates can also pose a risk to adults if taken in extremely high doses (e.g., more than 1 g of active nitrates per day). However, this is far higher than provided by the recommended serving of Nitrates+.

Can I use Nitrates+ every day? 
We recommend taking Nitrates+ for 7 days before an important race, event, or training session. It is not meant to be an everyday supplement. However, there is no health reason you could not take it regularly. 

Are there any side effects of Nitrates+?
Nitrates+ is generally well-tolerated and does not cause side effects in most healthy adults. However, some individuals may experience bloating, worsening of hemorrhoids, changes to heart rhythm, a slight drop in blood pressure, mild gastrointestinal discomfort, or a temporary pink/orange coloration in urine or stools, which is harmless.  

Can I use Nitrates+ with medications?
People taking heart medications or with conditions affected by nitrates/nitrites should not use Nitrates+. Always consult a doctor before combining with prescription drugs.

How quickly does Nitrates+ work?
Some benefits of Nitrates+ may be seen within one to two hours of taking it. However, sustained benefits and performance increases usually require at least three weeks of use. 

Does Nitrates+ increase VO2 max?
Nitrates+ can indirectly increase VO2 max. By improving oxygen delivery and reducing oxygen cost during exercise, Nitrates+ supports more efficient use of oxygen, which can enhance endurance performance.

Should I take Nitrates+ on non-training days?
Yes. Take it in the first half of the day on non-training days to support baseline nitric oxide levels and vascular health. It can also help with recovery. 

Is Nitriates+ WADA-compliant?
Yes. Nitrates+ is free from banned substances, regularly checked, and manufactured in a GMP-approved facility with the highest ISO 22000 standard. Furthermore, our suppliers also have a certificate confirming that their products are free of impurities. 

How long does Nitrates+ remain effective after taking it?
After taking Nitrates+, plasma nitrate levels typically remain elevated for 6–8 hours. However, factors like metabolism, genetics, health, and gut flora all affect individual response. 

How many nitrates does Nitrates+ contain per serving? 
There are 63.5 mg of nitrates per serving (3 capsules) of Nitrates+. 

Are there any studies on the effectiveness of Nitrates+?
There are no independent studies on the exact formula in Nitrates+. Scientific studies cost a lot of money and independent funding is not yet available. However, there are numerous studies on the individual ingredients, many of which are very positive.

Do I have to swallow the capsules of Nitrates+? Or can I open the capsules and mix them into water?
Nitrates+ capsules are not enteric-coated. You can open the capsules and mix the contents with water, juice, or a smoothie. This will not affect the efficacy, release, or absorption of Nitrates+. 

Don’t nitrates need to be held on the tongue to be effective? 
While it’s true that some conversion of nitrates to nitrites happens in the mouth via oral bacteria, the effect of holding Nitrates+ on your tongue for a few seconds is very small. Most of the supplement’s benefits come from digestion and absorption after swallowing. For convenience and to avoid the unpleasant taste, it’s recommended to simply swallow the capsules.

Trusted by professional athletes

I take Nitrates+ before races or high-intensity workouts. It gives me that extra edge in sprints and accelerations — I feel more explosive and can push harder for longer. It’s become a staple in my prep routine whenever I need to show up at my best.

Le Flochmoën Antoine

I use Nitrates+ as support for endurance during key training sessions, as well as for important races. They contribute to better blood flow and muscle efficiency, which makes me feel fresher, my legs lighter, and my pace more sustainable over longer periods. It especially helps me during intense speed workouts and marathon distances, where every additional percentage of performance matters.

Luka Bartolić

I use Nitrates+ before my hard training sessions and before competitions, this allows me to maximize blood flow and delay fatigue without having to consume liters of beetroot juice, which I digest very badly... the effect is truly amazing!

Émile Blondel-Hermant

Nitrates+ is a much easier way to get the benefits of beetroot juice without the hassle of prepping or drinking large volumes. I take it before threshold or long rides, and it feels like I can hold power with less perceived effort. It’s become a simple part of my pre-session fueling.

Marco Grittner

For someone like me who specializes in long distances, this is a product that should never be missing. It improves blood flow, reduces oxygen consumption, and delays fatigue — everything you need for sports. I usually take 3 capsules 30 minutes before exercise.

Cosimo Bertotto

I love the benefits of red beet, but not first thing in the morning. These capsules let me enjoy its effects without the taste, and I’ve definitely noticed an improvement — especially during long efforts.

Sara Ciapetti

Personally, I tried a combination of Fusion and Nitrates; this gave me consistent energy and better effort management. If i want to go for a KOM or a shirt effort Race, this is what i prefer, the right boost.

Alex Rigo

Who should use Nitrates+?

Perfect for any athlete looking to train harder, last longer, and sprint stronger.

Whether you're a cyclist powering through hill climbs, a runner pushing through sprint intervals, or a triathlete aiming to hold power through the final miles, Nitrates+ helps you go further with less effort.

Do you train consistently, race hard, and care about every watt? Nitrates are your next move.

How Does Nitrates+ Work?

Nitrates+ combines three natural nitrate sources (beetroot, red spinach, and arugula) with L-arginine HCL to boost nitric oxide production and improve performance by:

  • Widening blood vessels
  • Enhancing oxygen delivery
  • Increasing time to exhaustion


The result? More power for the same effort, stronger sprints, and faster recovery.

You’ll feel the first effects from day 1, but peak performance benefits build after 5–7 days of consistent daily use.

Beta vulgaris extract 10:1

Beetroot is naturally rich in nitrates, which the body converts into nitric oxide. For endurance athletes, this means improved blood flow, more efficient oxygen delivery, and reduced oxygen cost during exercise. The result is being able to hold your pace longer, push harder in intense efforts, and delay fatigue.

Red spinach extract (9% nitrates)

Red spinach is one of the most concentrated natural sources of nitrates. It supports higher nitric oxide levels, leading to better circulation, improved muscle efficiency, and lower perceived effort.

Arugula extract (10:1)

Arugula is another nitrate-rich superfood that boosts nitric oxide production, enhancing blood vessel dilation and oxygen delivery to working muscles.

L-Arginine HCL

L-Arginine is an amino acid that serves as a direct precursor to nitric oxide, helping to expand blood vessels and improve circulation. For endurance athletes, this results in more oxygen and nutrients delivered to the muscles, reduced fatigue, and stronger performance during long or demanding workouts.

Recommended Use

Take 3 capsules with water approximately 30 minutes before exercise.

On non-training days, take 3 capsules in the first half of the day.

Attention! People who take medication for heart conditions or have an allergy to nitrates or nitrites should not take this product!

At 4Endurance, our mission is simple

To provide elite-level nutrition at accessible prices for all. We follow the latest science in sports nutrition and use only high-quality ingredients that support your performance. From amateur enthusiasts to professional teams, we support athletes of all levels in reaching their goals.