N-Acetyl Cysteine (NAC)

N-acetyl cysteine (NAC) is a derivative of the amino acid L-cysteine. It is perhaps best known for its role as an antioxidant and for supporting the synthesis of glutathione. NAC may act directly as an antioxidant through donating sulfhydryl groups[32], and has been found to be react with several different types of reactive oxygen species […]


Manganese is an essential trace mineral. One of its primary roles in the body is as a constituent of the enzyme manganese superoxide dismutase (MnSOD), the main antioxidant enzyme found in the mitochondria (the energy-producing factories) of our cells. [62] Because a lot of free radicals are generated through the production of energy in the […]

Ornithine alpha-ketoglutarate (OAKG)

Ornithine alpha-ketoglutarate is a compound (salt) consisting of two molecules of ornithine and one molecule of alpha-ketoglutarate. OAKG has been found to have an anti-catabolic effect on the muscles, which is thought to be through promoting the secretion of growth hormone and insulin, and acting as a precursor to arginine and glutamine.[29] As a precursor […]

Arginine pyroglutamate

Arginine pyroglutamate is a compound consisting of arginine bonded to pyroglutamic acid. There is some evidence that arginine pyroglutamate may increase the release of growth hormone when taken with lysine: one study from 1981 on 15 men found that 1200mg each of arginine pyroglutamate and lysine hydrochloride raised growth hormone by up to 8 times […]


The amino acid arginine is known to stimulate growth hormone release[10,11]; in fact, it’s been found that taking oral arginine alone can increase the body’s circulating GH levels by at least 100% [11]. There also positive links between arginine supplementation and antioxidant activity in the body, including glutathione levels[12]. A double-blind trial on 46 patients […]

How Many Calories Should I Consume To Lose Fat And Build Muscle

     “I often get asked this question, let me put some meat on the bones of this tricky subject area. Here’s a message from one of our clients posted on the Four Week Fat Loss blog”   January 22nd, 2015 at 1:42 am Hi Matt, Height: 5,9″ Weight:  78kg Goal weight: 80kg. Can you tell […]