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Vitasy Nitric Oxide capsules, 60-capsule bottle on a dark background
Man training a dumbbell row: supports muscle pumps and nitric oxide production, L-citrulline + L-arginine, no caffeine or stimulants
Vitasy Nitric Oxide: citrulline + arginine, 400 mg L-citrulline malate + 400 mg L-arginine per serving, made in the USA, no caffeine
800 mg amino acids per serving: 400 mg L-citrulline DL-malate, 350 mg L-arginine HCl and 50 mg L-arginine AKG
Easy to stack: take 2 capsules alongside your pre-workout, protein shake or hydration drink
Comparison of Vitasy Nitric Oxide with citrulline-only and arginine-only supplements
How to use Vitasy Nitric Oxide: take 2 capsules with 6–8 oz of water, once a day
Vitasy Nitric Oxide supplement facts: 400 mg L-citrulline DL-malate, 350 mg L-arginine HCl and 50 mg L-arginine AKG per 2 capsules
Vitasy Nitric Oxide bottle, left side of the label
Vitasy Nitric Oxide bottle, right side of the label
243 reviews

L-Citrulline + L-Arginine Supplement for Pump & Endurance

Two capsules, 800 mg of L-citrulline malate and L-arginine, and nothing to mix. Made to support healthy blood flow and the pump you train for,* so it fits into your current stack without changing a thing.


Format:
Capsules
Size:
60 Capsules

Made in the USA

Manufactured in the USA. Two capsules a day, 30 servings in every bottle.

Benefits
  • Supports muscle pumps during training*
  • Supports workout stamina*
  • Supports healthy blood flow*
  • Helps you push through your sets*

*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.

Description

Vitasy Nitric Oxide delivers 400 mg of L-citrulline DL-malate and 400 mg of L-arginine (in two forms) in every 2-capsule serving. Citrulline and arginine are popular amino acids in pre-workout routines, taken to support nitric oxide production and healthy blood flow during exercise.* The capsules have nothing to taste and nothing to mix, so they slot into any stack without changing it.

  • Supports workout stamina*
  • Supports healthy blood flow*
  • Supports athletic endurance*
How to Use

Take 2 capsules daily with 6–8 oz of water, or as directed by your healthcare professional. Easy to take alongside your pre-workout, protein shake or hydration drink. Do not exceed the recommended dose.

Supplement Facts

Supplement Facts

Serving Size: 2 Capsules

Servings Per Container: 30

Amount per serving% Daily Value
L-Citrulline DL-Malate400 mg†
L-Arginine Hydrochloride350 mg†
L-Arginine Alpha-Ketoglutarate50 mg†

†Daily Value not established.

Other Ingredients: Cellulose (vegetable capsule), brown rice flour.

Vitasy Nitric Oxide bottle in a dark studio

Fuel your pump,support your endurance*

Supports muscle pumps*

In every training session

Supports nitric oxide production*

Part of your pre-workout routine

Citrulline + arginine

800 mg in every serving

No caffeine

No stimulants either

2 capsules a day

30 servings per bottle

Made in the USA
Stimulant-free capsules
30Servings per bottle
Close-up 3D render of glassy amino acid molecules in warm orange tones

What's inside

Feel every rep from the inside out

Each 2-capsule serving delivers 400 mg of L-citrulline DL-malate and 400 mg of L-arginine, go-to amino acids in pre-workout routines. Take it daily to support the muscle pump you're working for.*

How to Use

Take 2 capsules daily with 6–8 oz of water. Easy to stack with your pre-workout, protein shake or hydration drink.

Easy daily capsules
Made in the USA
800 mg per serving
Easy daily capsules
Made in the USA
800 mg per serving
Easy daily capsules
Made in the USA
800 mg per serving
Easy daily capsules
Made in the USA
800 mg per serving
Easy daily capsules
Made in the USA
800 mg per serving

How Vitasy compares

VitasyNitric Oxide
OtherCitrulline only
L-citrulline + L-arginine
Two forms of arginine
No caffeine or stimulants
Victor M.

This has surpassed my expectations. The ingredients and how easy the capsules are to take are awesome. Love this brand, so far two of my workout partners have made the switch as well.

Hand shaking two white capsules from a Vitasy Nitric Oxide bottle into a palm in a dark gym

Frequently asked questions

Nitric Oxide

Can I take these capsules with other products?

Yes. You can take Vitasy Nitric Oxide alongside your protein, pre-workout or hydration drink.

Does it contain stimulants?

No. Each serving is 2 vegetable cellulose capsules with L-citrulline DL-malate and two forms of L-arginine, with no caffeine or other stimulants, so you can take it at any time of day.

Do the capsules have a taste?

No. The amino acids sit inside the capsule, so there is nothing to taste. Simply take 2 capsules with 6–8 oz of water.

Why citrulline and arginine together?

Both are amino acids your body uses to make its own nitric oxide. Each 2-capsule serving pairs 400 mg of L-citrulline DL-malate with 350 mg of L-arginine hydrochloride and 50 mg of L-arginine alpha-ketoglutarate.*

Important information

For adults 18+. Do not exceed the recommended serving. Consult your healthcare professional before use if you are pregnant or nursing, take prescription medication, or have a medical condition. Keep out of reach of children. Store in a cool, dry place with the cap closed.

*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.

Customer reviews

Based on 243 reviews

5 ★
220
4 ★
23
3 ★
0
2 ★
0
1 ★
0
Anthony J.✓ Verified buyer
10/21/26

Good pump

I feel the pump and blood flow in my workouts and I feel good.

Randy G.✓ Verified buyer
10/21/26

Doing the job

Seems to be doing the job. Appreciate how fast my supplements are shipped. So thank you.

Isidro M.✓ Verified buyer
10/20/26

Very good clean, pure ingredient

Very good clean, pure ingredient. It will always be one of my staple supplements in my pre-workout routine and my preferred pump supplement. I feel it helps my energy in training and it fits well alongside my creatine, taurine, TMG, beta alanine and EAA stack.

Steven B.✓ Verified buyer
10/20/26

Awesome product that works

Awesome product that works and I trust. Great job 👍

Dennis F.✓ Verified buyer
10/19/26

Great product… Highly recommend it.

Great product… Highly recommend it.

Cory C.✓ Verified buyer
10/19/26

Good purchase

I've been happy with my purchase. I take my 2 capsules a day and I believe it has supported my workouts and my overall circulation. So far I'm a satisfied customer.

Brad
10/18/26

Good value

For me it gives a noticeable pump. Great value in the current market.

Eric W.✓ Verified buyer
10/18/26

Love it

Love this stuff. My body feels good after a long day of laying concrete blocks. I'm almost 68 years old and worked construction jobs all my life. I feel good taking it.

Napoleon S.✓ Verified buyer
10/17/26

Easy to take

I take it alongside my hydration drink, and there's nothing to taste. Goes down easily and fits right into my routine.