SKU: 48222687778

NutraBio | L-Arginine | 60 Servings

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Description

NutraBio | L-Arginine | 60 ServingsStraight up HPLC verified arginine in clear capsule doses NutraBio L Arginine is a simple one ingredient amino supplement. It delivers pure free form L arginine in easy capsules. Each 2 capsule serving gives you 1,500 mg of L Arginine, and it's HPLC verified for puritythat means lab tested to ensure it's clean. This is key for folks who skip blends, stims, or extras. It's a targeted tool, not a full pre workout. L Arginine is the main building block

Straight-up HPLC-verified arginine in clear capsule doses

NutraBio L-Arginine is a simple one-ingredient amino supplement. It delivers pure free-form L-arginine in easy capsules. Each 2-capsule serving gives you 1,500 mg of L-Arginine, and it's HPLC-verified for purity—that means lab-tested to ensure it's clean. This is key for folks who skip blends, stims, or extras. It's a targeted tool, not a full pre-workout.

L-Arginine is the main building block for nitric oxide, made through nitric oxide synthase. Basically, it helps your body produce nitric oxide, which relaxes blood vessels and boosts blood flow. In the gym, that means better pumps, circulation, and getting nutrients to your muscles. Studies on blood flow often use 3-6 g, showing a slight bump in flow. There's also some data on better anaerobic performance in active people when taken before workouts. Outside of training, research links it to vascular health, like lowering blood pressure in some groups.

Dose check: 1,500 mg per 2 capsules is clear and flexible, but it's under the 3-6 g from studies on quick blood-flow perks. It's not useless; it's a good base dose. Stack it or double up for more impact. If you're mixing with other NO boosters, that's a plus. For a big pump from just this, keep expectations real.

NutraBio L-Arginine by NutraBio contains 1500mg L-Arginine, a standard dose for muscle recovery and growth.

Key Highlights

  • 1,500 mg L-Arginine per 2 capsules—it's the direct fuel for nitric oxide pathways. Great for targeting blood flow, circulation, and pumps without a full pre-workout mix.
  • Free-form L-Arginine—just the amino, no hidden blends or fancy extras. That's what you want for controlling your dose and stacking easy.
  • Totally open label—one ingredient, one dose, no blend tricks. In a world of hidden amounts, this shows you exactly what's inside.
  • Capsules for easy use—no mixing, no mess, no flavor issues. Perfect for travel, work, or quick gym prep.
  • HPLC-verified for purity—when it's just one ingredient, quality is everything. NutraBio tests it hard so you know it's legit.
  • Boosts nitric oxide right at the source—arginine feeds nitric oxide synthase directly. That's why it's solid for vascular support and workout flow.
  • Backed by research with real talk—studies show minor blood-flow gains, often at 3-6 g. This 1,500 mg is a starter dose, not a full pump blast.
  • Stacks great with citrulline—citrulline raises arginine levels better long-term, but this adds direct support. Ideal for building your own pump stack.

NutraBio L-Arginine by NutraBio contains 1500mg L-Arginine, a standard dose for muscle recovery and growth.

Who Is This For?

  • Physique lifters chasing pump, fullness, and mind-muscle during volume sessions. Gives easy arginine capsules to boost NO without messing your pre routine.
  • Stim-sensitive folks wanting flow without caffeine. Just 1,500 mg L-Arginine, so use late or with coffee as needed, not forced stims.
  • Minimalist supp users picking singles over blends. Build your stack knowing every mg—this fits that vibe.
  • Vet pre users with citrulline, creatine, or caffeine already, tuning NO. Adds direct precursor for custom setups.
  • Fasted trainers needing quick amino pre-lift. Capsules are portable, no powder hassle, for flow-focused efforts.
  • Fitness peeps into vascular perks beyond gym. Arginine ties to circulation and BP research, so good for exercise plus heart wellness.

How to Use

Take 2 veggie capsules with water per serving. For pre-workout, do it 30-45 minutes before so it's ready for your session, especially for pumps and flow. If new to arginine or mixing NO stuff, start with this dose and see how it plays before adding more. Capsules mean no mixing—great for trips, work, or quick starts. For best soak-in, skip with heavy meals to avoid slowdown. Stacks well with citrulline for NO power, creatine for strength, electrolytes for hydration. No stims, so no cycling needed. Keep in cool, dry spot, bottle closed tight.

What to Expect

First 0-10 minutes: nothing big, it's not a stim. 10-30 minutes: pre-workout, it shows subtly as you start lifting, not standalone. 30-60 minutes: during sets, you might feel fuller muscles and nicer pumps, especially in rep-heavy work. 60-90 minutes: effects are chill and steady, not spiky. Days 1-7: figure out how it feels in your routine, solo or with citrulline. Weeks 2-4: it's more about consistent use and tweaking your stack than building up—arginine is for quick support, not long loading.

Key Ingredients

  • L-Arginine — 1500 mg — Direct nitric oxide precursor for blood flow support

NutraBio L-Arginine by NutraBio contains 1500mg L-Arginine, a standard dose for muscle recovery and growth.

Frequently Asked Questions

How much L-Arginine is in each serving of NutraBio L-Arginine?

Each 2-capsule serving provides 1,500 mg of L-Arginine. Based on the verified formula, that breaks down to 750 mg per capsule.

Is 1,500 mg of L-Arginine a clinical dose for pump and blood flow?

It is a transparent and usable dose, but it is below the 3-6 g range commonly used in acute blood-flow research. The best way to view this product is as a foundational arginine dose or a stackable building block rather than a maximal standalone pump dose.

What does L-Arginine actually do in the body?

L-Arginine is a direct precursor for nitric oxide production through the nitric oxide synthase pathway. Nitric oxide helps blood vessels relax and widen, which is why arginine is used for circulation, blood flow, and workout pump support.

When should I take NutraBio L-Arginine?

Most users will get the most practical use by taking 2 capsules 30-45 minutes before training with water. It can also be taken between meals on non-training days if you are using it as part of a consistent circulation-focused routine.

Is this product stimulant-free?

Yes, based on the verified formula, the only active ingredient listed is L-Arginine at 1,500 mg per serving. There is no verified caffeine or other stimulant in the formula.

Should I choose arginine or citrulline for nitric oxide support?

For many users, citrulline is the superior option for raising arginine availability because it bypasses more first-pass breakdown. Arginine still has a place, especially for users who want direct substrate support or who like stacking arginine with citrulline for a broader nitric oxide strategy.

Can I stack NutraBio L-Arginine with a pre-workout?

Yes, and that is one of its best use cases. Because it is a single-ingredient, stim-free capsule, it can be layered with caffeine, citrulline, creatine, or a full pre-workout if you want more customized nitric oxide support.

Will I feel this right away?

Usually not in the dramatic way you would feel caffeine. The effect is typically subtle and becomes more noticeable during the session as blood flow, muscle fullness, and pump build with repeated sets.

Does this product need to be cycled?

No standard cycling is required for L-Arginine in the way it is for high-stimulant products. Most users simply decide whether they prefer taking it around workouts only or more consistently as part of a broader routine.

Who should talk to a doctor before using this product?

Anyone with blood pressure issues, cardiovascular conditions, or who uses nitrate medications, PDE-5 inhibitors, or blood-pressure-lowering drugs should speak with a healthcare professional first. Because arginine influences nitric-oxide-mediated vasodilation, these interactions matter.

Shipping Notes
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E. M. Zobrist
Fort Morgan, US
★★★★★ 4
Great shoes
Size: 10, Color: Grey, Size: 10, Color: Grey
I got 2 pairs of these specifically for a water rafting trip. The first pair was a little large, so I went down a half size ( and gave the larger pair to my son). They are comfortable, even for wide feet - although after a long day of use in the water, there was some chaffing on the outsides of my feet. It loosened up a bit across my wide foot, after getting wet. These worked great! They have adjustable strap across the back, that pulls tight on the outside. the laces are elastic and tighten by pulling and then pushing the stopper down onto the laces. They didn't slip (loosen) but, to get them tight, I had excessive amount of laces hanging out (had to tuck them into the tongue.
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Reviewed in the United States on September 2, 2024
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Z. Khin
Louisville, US
★★★★★ 5
Exactly what I was looking for
Size: 9-9.5, Color: Black Denim Blue
Perfect for what I wanted in an active casual shoe. Love the tread, it's both grippy and durable but flexible, the fit, adjustability, easy to take on and off, perfect amount of cushion and stability. Can wear with or without socks comfortably.
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Reviewed in the United States on April 7, 2026
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Gary R
Bozeman, US
★★★★★ 5
Excellent value!
Size: 10.5, Color: Black
Very well Made. Just received these and was surprised at the quality of the materials and they way they look. Much higher quality than the oriental point. They are comfortable and fit very well. I ordered 10.5, nice room in the box. I have not worn them yet, first impressions are positive. I will update after wearing them for awhile. So far, very happy with the purchase! Black and orange color looks great!
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Reviewed in the United States on April 15, 2026
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Pete V
Lowell, US
★★★★★ 5
Perfect fit
Size: 9-9.5, Color: Blue/Grey
I think these shoes are excellent. I ordered a pair which arrived after 2 days. Contrary to some reviews I do not find these water shoes a tight fit at all. And I have bunions. Indeed I find them very comfortable. I have used them in water and as advertised they drain dry pretty quickly. In short I am delighted with the shoes. So much so that I ordered a second pair. Different colour of course. They just arrived and I am wearing them now. Same size and just as comfortable. Thank you.
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Reviewed in the United States on May 30, 2026
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K.C.
Chelsea, US
★★★★★ 1
One day of use, then it rubbed against my toes and caused cuts
Size: 9-9.5, Color: Black Denim Blue, Size: 9-9.5, Color: Black Denim Blue
I got these right before a trip to Costa Rica where we would be doing a lot of hiking, some tubing, and be in and out of water. They felt great when I first tried them on and I was optimistic. Our first day, we hiked a total of about 5 miles in the forest and along a river, with some swimming in pools throughout the hike. These weren't difficult trails, but a mix of gravel, rock, dirt, etc. The shoes felt fantastic and were comfortable all day. Later that evening, after they had mostly dried out, we did another mile or so to some other pools and I had no problem. During that hike I was so happy I was actually talking to my kids about what great things I was going to say in a review. The following day however, as soon as I put on the sandals, just walking to the hotel pool, the top of the shoe, just above my big toes, was bending and rubbing against my toes. It was very noticeable and I took them off and made sure there was no sand or anything else causing the irritation. I had no other choice that day and we ended up back on a similar trail, hiking a total of about 1.5 miles, with it rubbing against my toes the entire time. I tried both tightening and loosening the shoes and changing my stride to step more flat footed so they wouldn't bend at the back of my step, but that didn't help. Neither did getting them wet again, hoping to soften something up. By the time we were half way through that hike, there were visible raw spots on top of both my big toes. By the time we were done, they had become sores and very painful. The following day, we walked on the sidewalk to breakfast about three blocks away and it hurt bad enough that I found a store and bought a pair of flip-flops instead. I haven't worn the sandals since. I can't tell exactly what's going on inside the shoe, but I think the leathery part of the shoe is pushing down at the natural break in the toe area when I step, and the mesh is rubbing. Since I've worn them outside and been swimming in them, I can't return them, but they're basically useless after one good day.
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Reviewed in the United States on November 29, 2025

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