L-Citrulline & L-Arginine Stack Capsules: Healthy Circulation, Stamina, Caffeine-Free

L-Citrulline & L-Arginine Stack Capsules

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L-Citrulline & L-Arginine Stack Capsules: Healthy Circulation, Stamina, Caffeine-Free
  • L-Citrulline & L-Arginine Stack Capsules: Healthy Circulation, Stamina, Caffeine-Free
  • L-Citrulline & L-Arginine Stack Capsules
  • L-Citrulline & L-Arginine Stack Capsules
  • L-Citrulline & L-Arginine Stack Capsules
  • L-Citrulline & L-Arginine Stack Capsules
  • L-Citrulline & L-Arginine Stack Capsules
  • L-Citrulline & L-Arginine Stack Capsules: L-Citrulline, L-Arginine HCl, L-Arginine AKG
  • L-Citrulline & L-Arginine Stack Capsules on a gym bench in warm evening light
L-Citrulline & L-Arginine Stack Capsules
4.7/5 | 3 verified reviews

L-Citrulline & L-Arginine Stack Capsules

Citrulline plus two forms of arginine, the amino acids your body uses to make nitric oxide, to support blood flow and stamina through long practices, games and sessions.*

Two capsules a day. No caffeine, nothing to mix.
  • Supports nitric oxide production for healthy circulation and oxygen delivery to working muscles.*
  • Helps support stamina, focus and muscle performance for lifting, sprints and long matches.*
  • 400 mg L-citrulline DL-malate, 350 mg arginine HCl and 50 mg arginine AKG per serving.
  • Caffeine-free vegan capsules; one bottle of 60 lasts 30 days.

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How It Works

A stack is two or more ingredients taken together because they work toward the same goal. Here the goal is nitric oxide: your body makes it from arginine, and turns citrulline into more arginine, so the pair supports steady nitric oxide production.* Nitric oxide helps blood vessels widen, which supports the delivery of oxygen and nutrients to working muscles.* That is the base for the stamina, focus and physical readiness you want in long practices, matches and gaming sessions, and for recovery after them.*
What's Inside

Per serving (2 capsules):

  • L-Citrulline DL-Malate, 400 mg: the amino acid citrulline bound to malic acid, here to support nitric oxide production and stamina.*
  • L-Arginine Hydrochloride, 350 mg: the amino acid your body makes nitric oxide from, for healthy blood flow.*
  • L-Arginine Alpha-Ketoglutarate, 50 mg: arginine bound to AKG, a compound your cells make naturally, to support muscle performance.*

Other ingredients: cellulose (the vegetable capsule) and brown rice flour.
How to Take It

Adults take two capsules a day, ideally with 6–8 oz (177–237 ml) of water, or as directed by a healthcare professional. One bottle holds 60 capsules: 30 days at two a day. The label sets no time of day, so pick one you can keep every day, on training days and rest days alike.
Quality & Safety

Made in the USA in an FDA-registered facility that follows Good Manufacturing Practices (GMP). Vegan friendly, vegetarian, gluten-free, non-GMO and allergen-free, with no caffeine.

  • Do not take more than two capsules a day.
  • If you are pregnant or nursing, under 18, or have a known medical condition, ask a doctor first.
  • Keep out of reach of children. Do not use if the safety seal is damaged or missing.
  • Store in a cool, dry place.
Vegan Gluten-Free Non-GMO Made in USA
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Free US shipping
30-day money-back guarantee
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Made in FDA-registered facilities
Secure checkout
L-Citrulline & L-Arginine Stack Capsules on a gym bench in warm evening light

7 PM Leg Day. Wide Awake at 1 AM.

Your only free hour to train is after work. A caffeine pre-workout gets you through it, then keeps you staring at the ceiling long after the gym has closed.

  • Counting ceiling cracks at midnight after an evening lift
  • Heavy legs on the last set of squats
  • Skipping the late game because work starts at 6 AM
  • A gritty pre-workout you chug, then regret

Keep the training, drop the stimulant: 400 mg of L-citrulline and two forms of arginine in two caffeine-free capsules, to support nitric oxide and healthy circulation.*

L-Citrulline & L-Arginine Stack Capsules: L-Citrulline, L-Arginine HCl, L-Arginine AKG

Citrulline Plus Arginine. No Caffeine, No Shaker.

Your cells build nitric oxide out of arginine, and they can turn citrulline back into arginine.*

So this stack pairs 400 mg of L-citrulline DL-malate with 350 mg of L-arginine HCl and 50 mg of L-arginine AKG, in two vegetable capsules you swallow with water.

  • 400 mg L-citrulline DL-malate, to support nitric oxide production*
  • 350 mg L-arginine HCl, for healthy blood flow to working muscles*
  • 50 mg L-arginine AKG, to support muscle performance and recovery*
  • Vegetable cellulose capsules with brown rice flour, and no caffeine

Two capsules a day with 6-8 oz of water, on training days and rest days, and one bottle lasts 30 days.

What Two Capsules Bring to Every Session

Circulation

Citrulline and arginine help your body make nitric oxide, for healthy circulation.*

Stamina

Supports stamina through long practices, late games and tournament weekends.*

Recovery

Arginine AKG helps support muscle recovery after a hard session.*

No Caffeine

No stimulant in the mix, so it fits a 6 AM lift or a 9 PM game.

*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.

What Customers Say

Why Our L-Citrulline & L-Arginine Stack Capsules Wins

BEST CHOICE
L-Citrulline & L-Arginine Stack
 Caffeine pre-workout powders Energy drinks Citrulline-only powders
Caffeine-free
Nothing to mix or shake
No taste to get used to
Goes in a pill organizer
Measured dose every day

Made in FDA-registered facilities

Every SineoLabs product is made in an FDA-registered facility.

30-day money-back guarantee

Not right for you? Contact us within 30 days of your order and we will refund you.

Free US shipping

Every US order ships free. Subscriptions can be skipped, paused or cancelled anytime.

Frequently Asked Questions

  • It usually takes 2-4 days.

  • It gives your body citrulline and arginine, the raw materials for nitric oxide.* Nitric oxide helps blood vessels relax, which supports circulation and the flow of oxygen and nutrients to your muscles during exercise.*

  • Swallow two capsules a day with 6–8 oz of water, unless your healthcare professional tells you otherwise.

  • No. Its only active ingredients are citrulline and two forms of arginine.

  • A caffeine pre-workout powder has to be mixed into a drink and gives you a stimulant. This stack is two capsules with no caffeine, and it gives you a measured dose of citrulline and arginine every day.

  • Supplements work best as part of a daily routine. One bottle lasts 30 days; take it every day, as the label directs.

  • Yes. The capsules are vegetable cellulose, and the formula is vegan friendly, vegetarian, gluten-free, non-GMO and allergen-free.

  • If you take any medication or have a medical condition, ask your doctor before you start, as you should with any supplement.

  • No. You can buy it once, or subscribe and save on every order. You can skip, pause or cancel a subscription anytime.

  • Every order is covered by our 30-day money-back guarantee. If it's not right for you, contact us within 30 days for a refund.

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