Amino Acids Best Ornithine Supplements – Top 10 Brands for 2022

Best Ornithine Supplements – Top 10 Brands for 2022

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In order to help you find a good product, we’ve researched & compared the best ornithine supplements on the market right now.

Top 10 L-Ornithine Products Compared

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1. NOW Foods L-Ornithine

NOW Foods L-ornithine

NOW Foods cites l-ornithine as a precursor to other substances, such as citrulline, proline and glutamate, and creatine.

Each 120-capsule bottle contains 40 three-capsule servings. Manufactured in a cGMP facility, NOW Foods l-ornithine is also free of most common allergens, such as gluten, soy, nuts, eggs and dairy.

Specs and Highlights

  • 500 milligrams of l-ornithine hydrochloride per serving
  • Vegan- and vegetarian-safe
  • Contains no GMO ingredients
Where to Get It

2. Ultimate Nutrition Arginine Ornithine Lysine

Ultimate Nutrition Arginine Ornithine Lysine Capsules

Each capsule consists of a 1:1:1 ratio of arginine, ornithine and lysine. With a three-capsule serving, each 100-capsule bottle contains 33 servings plus one capsule. Ultimate Nutrition suggests three capsules daily before bedtime.

Specs and Highlights

  • 750 milligrams of l-arginine per serving
  • 750 milligrams of l-ornithine per serving
  • 750 milligrams of l-lysine per serving
  • eTake before bedtime or 30 minutes prior to workout
  • Stacks with other aminos, such as glutamine
Where to Get It

3. BulkSupplements Pure L-Ornithine HCL Powder

BulkSupplements Pure L-Ornithine HCL Powder

Like the manufacturer’s name indicates, BulkSupplements offers high-grade crystalline l-ornithine hydrochloride in a bulk powder form. Bulk powder form offers many convenient options for ingestion. You can add it to protein shakes, smoothies, or juice, or you can buy your own capsules and create your own single-capsule dosage size.

BulkSupplements offers l-ornithine HCl powder in several bag sizes, including 100-gram, 250-gram, 500-gram, 1-kilogram, 5-kilogram and 25-kilogram for both personal or commercial/retail use.

Specs and Highlights

  • Each 1/4 teaspoon supplies 800 milligrams of l-ornithine hydrochloride
  • Mix with hot water for best results
  • Two servings daily recommended
Where to Get It

4. Jarrow Formulas Arginine and Ornithine

Jarrow Formulas Arginine and Ornithine

Jarrow Formulas features ornithine stacked with arginine, an amino acid used to build proteins in the body. Arginine is semi-essential, which means your body cannot produce it, and you must obtain it from your diet or through supplementation.

Specs and Highlights

  • 500 milligrams of l-arginine per serving
  • 250 milligrams of l-ornithine per serving
  • Proprietary Easy-Solv tablets break down more readily during digestion
  • Suitable for vegans and vegetarians
Where to Get It

5. Solgar L-Arginine/L-Ornithine

Solgar L-Arginine L- Ornithine Vegetable Capsules

Solgar’s l-arginine/l-ornithine stack is vegetarian-friendly and free of wheat, gluten, and dairy. The serving size is one capsule, and the bottle contains 50 vegicaps, although there is a 100-vegicap size as well. Solgar recommends one to two capsules daily between meals.

As with all of its products, Solgar’s arginine/ornithine is kosher, and the company’s kosher certification number appears on its website.

Specs and Highlights

  • 500 milligrams of l-arginine per serving
  • 250 milligrams of l-ornithine per serving
  • Certified kosher
  • Safe for vegetarians
  • Free of soy, yeast, sugar, and gluten
  • Tinted glass bottle prevents light damage, exposure to BPA and preserves freshness
Where to Get It

6. NOW Foods L-Arginine/Ornithine

NOW Foods L-arginine ornithine

Billed as a supplement for proper protein metabolism, NOW Foods L-Arginine/Ornithine comes in a 250-capsule bottle supplying 125 two-capsule servings. Typical of such stacks, each serving supplies arginine and ornithine in a 2:1 ratio.

GMP-certified and non-GMO, NOW Foods arginine stack is also free of sugar, soy, gluten, dairy, nuts and corn. NOW Foods suggests two capsules daily.

Specs and Highlights

  • 500 milligrams l-arginine per serving
  • 250 milligrams l-ornithine per serving
  • Can be taken with juice or water on an empty stomach before exercise or bed
Where to Get It

7. Twinlab L-Ornithine

Twinlab Inc L-Arginine & L-Ornithine

Formulated in a 2:1 ratio, Twinlab Inc arginine/ornithine stack is a free-form version of the amino in an easy-to-swallow capsule. The company offers a 100-capsule bottle as of 2017, with a recommended dose of one to three capsules daily on an empty stomach. Twinlab Inc manufactures its products in an NSF GMP registered facility.

Specs and Highlights

  • 500 milligrams ornithine per serving
  • Easy-to-swallow capsules
Where to Get It

8. Puritan’s Pride L-Arginine L-Ornithine L-Lysine

Puritan's Pride L-Arginine L-Ornithine L-Lysine

Similar to the Ultimate Nutrition product mentioned above, Puritan’s Pride’s l-arginine/ornithine/lysine stack is a tri-amino supplement in caplet form. The product is gluten-free and vegetarian.

Puritan’s Pride offers a 60-caplet bottle that yields 15 four-caplet servings. Four caplets twice daily are recommended, either on an empty stomach, before exercise or before bed.

Specs and Highlights

  • 1,1447 milligrams of l-arginine per serving
  • 900 milligrams of l-ornithine per serving
  • 1,200 milligrams of l-lysine per serving
  • Caplets are coated for easy swallowing
  • Product is Puritan’s Pride Quality Assured
Where to Get It

9. Best Naturals Tri-Amino

Best Naturals Tri Amino

Best Naturals offers its own tri-amino stack, combining free-form arginine, ornithine and lysine in a ratio identical to the same supplement by Puritan’s Pride. Made in the USA, and manufactured according to GMP, Best Naturals tri-amino is free of allergens and comes with a 30-day 100 percent money-back guarantee.

Specs and Highlights

  • 1,447 milligrams of l-arginine per serving
  • 900 milligrams of l-ornithine per serving
  • 1,200 milligrams of l-lysine per serving
  • 250 caplets per bottle
  • Free of dairy, soy, sugar, preservatives and fish
Where to Get It

10. Olympian Labs Arginine 500mg & Ornithine

OLYMPIAN LABS Arginine 500mg & Ornithine 250mg

Olympian Labs arginine and ornithine supplement is your basic 2:1 ratio stack in a one-vegicap serving. With a daily recommendation of up to three vegicaps, the 100 vegicap bottle contains from 33 to 100 servings.

Specs and Highlights

  • 500 milligrams l-arginine hydrochloride per serving
  • 250 milligrams l-ornithine monohydrochloride
  • Tinted bottle prevents light damage and maintains freshness
Where to Get It

Frequently Asked Questions About Ornithine Supplements

What is L-Ornithine?

Ornithine occurs naturally in the body where it plays a part in the urea cycle, which entails the reduction of elevated ammonia levels within the body through urine production and excretion.

Although classified as an amino acid, ornithine does not contribute to the building of the body’s proteins like other amino acids (such as BCAAs and effective BCAA supplements) . Ornithine is nonessential, which means your body produces it on its own as opposed to deriving it from external sources.

During the urea cycle, also known as the ornithine cycle, ornithine binds to another substance called carbamoyl phosphate, which requires ammonia for its production.

The subsequent conversion of this phosphate into another amino acid, L-Citrulline, yields urea, a byproduct. Consequently, ornithine functions as a catalyst, restoring your blood ammonia levels to optimal levels.

High levels of ammonia, a waste product of cellular metabolism, can impair your brain function and hasten the onset of fatigue during activity. By helping in keeping your blood ammonia at normal levels, ornithine inadvertently has the potential to enable you to work out for longer periods.

How Do I Take Ornithine?

Read the instructions on each product label. It’s always better to err on the side of caution, so begin with the lowest dose to assess your tolerance. Increase dosages slowly. Daily ornithine doses in excess of 10 grams may cause diarrhea, but your threshold might be even lower. Luckily, ornithine has no known toxicity.

Speak with your doctor before taking any supplement.

How Do I Pick a Good Ornithine Product?

When shopping for ornithine, be sure that the product in question is indeed L-Ornithine. The “L-” before the amino acid name denotes a free-form amino acid.

Free-form amino acids are “predigested,” so to speak.

Most amino acids occur naturally in protein or peptide chains. For your body to utilize each amino acid as required, it must first digest the protein or peptide and break these chains.

Free-form amino acids do not exist within protein or peptide chains. Consequently, they are instantly available to your body, serving as the building blocks of new protein (muscle) and the foundation of new tissue (healing).

How Did We Pick These Supplements?

Our core value at Top10Supps is transparency which is why we are open about how we pick the supplements that you just saw. You can read more about our supplement ranking methodology here.

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