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L-Arginine & L-Ornithine


Helps support lean body mass and immune health*


  • Immune system health*
  • Lean body mass building*


Twinlab® L-Arginine & L-Ornithine Caps deliver a combined 750 mg of these two essential amino acids in just one capsule. Taking one to three a day can help support the immune system and promote blood flow.*
L-Arginine and L-Ornithine are amino acids that provide many health benefits.
L-Arginine is an essential amino acid that’s necessary to promote lean muscle mass, immune system function, detoxify amino, and for liver detoxification with added Ornitine.*
Arginine is popularly used in many pre-workout and energy drinks and helps deliver amazing pumps. Ornithine is important in promoting growth hormones production, which supports lean muscle mass.

Suggested Use:

Take one (1) to three (3) capsules a day, or as directed by a healthcare professional. For best results, take on an empty stomach.
Keep tightly closed in a cool, dry place.

Key Benefits:

  • Promotes blood flow*
  • Supports lean muscle mass*
  • Promotes fat loss*
  • Supports healthy kidney function*
  • Maintains proper immune system function*
  • Acts as a precursor to nitric oxide*
  • Plays a key role in growth hormone production*

Key Ingredients:

L-Arginine (from L-Arginine Hydrochloride), L-Ornithine (from L-Ornithine Hydrochloride), Gelatin, Purified Water, Stearic Acid, Silica, MCT.

Dietary Restrictions:

No added flavorings, sugars, salt, artificial sweeteners, colorings, preservatives, or salicylates.
Free form amino acids.
Free of most common allergens such as corn, yeast, rice, barley, wheat, lactose (milk sugar) and all milk, citrus, fish, and egg products.
Well-tolerated by most highly allergic individuals.

Product Specs:

Form: Capsule
Count: 100


If you are pregnant, nursing, taking any medication, or have any medical condition, consult a health care professional before use. KEEP OUT OF REACH OF CHILDREN.


Q: What are the USPs of L-Arginine & L-Ornithine Caps?
A: Contain free-form amino acids that are easier to swallow and assimilate. These caps are great for supporting blood flow, lean muscle mass, fat loss, immune health, nitric oxide production, and growth hormone production.

Q: What is the product made from? Or where is the primary ingredient sourced from?
A: The product is made of L-Arginine (from L-Arginine Hydrochloride) and L-Ornithine (from L-Ornithine Hydrochloride). Other ingredients include gelatin, purified water, stearic acid, silica, and MCT.

Q: How often should you take L-Arginine & L-Ornithine?
A: Take one (1) to three (3) capsules a day.

Q: What is the ideal time of the day to take L-Arginine & L-Ornithine?
A: As a dietary supplement, take 1-3 capsules daily, or as directed by a healthcare professional. For best results, take on an empty stomach.


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