L-Ornithine hydrochloride

  • Increases growth hormone
  • Greater anabolic response to training
  • Helps to reduce the breakdown of muscle tissue
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L-Ornithine can be used to help to avoid the breakdown of muscle tissue and support the anabolic response to resistance training

L-Ornithine is a nutritional supplement that can support various training goals by increasing lean body mass and strength. L Ornithine works by elevating the levels of the anabolic growth hormones insulin and growth hormone after training. The mechanism for this process is suggested to result from raising the availability of amino acids for protein synthesis and for reducing protein degradation.

Increased growth hormone is not only essential for achieving adaptations to various exercise regimes but is also essential for improving body composition. L-Ornithine can be used with arginine for a superior anabolic response.

L-Ornithine is a non-essential amino acid essential for the production of urea which is important for removing nitrogen and ammonia and many other essential biological reactions within the human body.

Key Ingredients

Ingredient Amount Per Serving
L-Ornithine 2 g († EU RDA)
g = gram, † = Not specified, EU RDA = European Recommended Daily Allowance.


Ingredients: L-Ornithine

No artificial colours, flavours or preservatives. Suitable for Vegetarians.

Reference List

  • Zajac A, Poprzecki S, Zebrowska A, Chalimoniuk M and Langfort J. Arginine and ornithine supplementation increases growth hormone and insulin-like growth factor-1 serum levels after heavy-resistance exercise in strength-trained athletes. J Strength Cond Res 24: 1082-1090, 2010.
  • Shinichi Demura, Takayoshi Yamada, Shunsuke Yamaji, Miho Komatsu, Koji Morishita. The effect of L-ornithine hydrochloride ingestion on human growth hormone secretion after strength training. Advances in Bioscience and Biotechnology, 2010, 1, 7-11

Take 2-5 g of L-Ornithine twice daily in water or fruit juice.

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