Shield Subscription

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Physical strain, diet choices, infections and many other factors generate metabolic waste, which, if accumulated, causes inflammation and affects our level of performance.

Immune Support and Metabolic Waste Management

Shield is formulated to support the body’s immune functions and metabolic waste removal processes. Shield contains a comprehensive blend of essential micronutrients and botanicals that are related to these functions, including vitamin C, vitamin E, zinc, selenium and quercetin. 

A key mechanism of action of Shield is to support the level of glutathione in the body. Shield contains a blend of glutathione precursors, co-factors and auxiliary antioxidative compounds to support the production and recycling of glutathione, and to limit its depletion. 

Glutathione is a ‘master’ antioxidant used by every cell and tissue in the body that is, despite its relative obscurity, essential to immune cell response and to how the body reacts to inflammation, as well as the mechanism by which our body handles metabolic waste.

Glutathione plays a key role in maintaining the body’s balance between pro- and anti-inflammatory compounds when the metabolic system alters in response to a change in the level of a particular reactive oxygen species.

Glutathione can bind to a range of toxic molecules to form harmless complexes that are then excreted rapidly from the body. This process applies to both molecules originating from outside of the body as well as endogenous ones: hormonal waste, lactic acid buildup in active muscles, inflammatory prostaglandins, fungal toxins and carcinogens like acetaldehyde.

Immune stress, inflammation and excess waste processing deplete glutathione. Supporting glutathione metabolism is a functional supplementation strategy with wide-ranging therapeutic and ergogenic potential.

  • Compounds in Shield are shown to support optimal Glutathione levels. Glutathione is a requisite of proper functioning of cell-mediated immunity and even moderate changes in the intracellular glutathione level have profound effects on immune cell function.
  • Compounds in Shield are shown to support the maintenance of the body’s inflammatory status. Viruses and bacteria, heavy metal toxicity, certain medications, physical exertion and even the normal processes of aging can all cause oxidative damage to cells.
  • Compounds in Shield are shown to support the removal of a wide array of waste substances, originating from both outside and inside, by supporting their excretion process from the body.
  • Compounds in Shield are shown to indirectly support physical performance capacity. Increasing glutathione through supplementation has been shown to improve lipid metabolism and elimination of lactic acid from muscles during exercise, leading to less muscle fatigue. Glutathione depletion has also been shown to adversely affect cellular energy (ATP) metabolism.

Mechanism of Action

Suitable for controlling inflammation, replenishing the body's antioxidant capacity and supporting the processing of metabolic waste and external harmful substances.

Duration of Effect

8–10 hours.


Recommended dosage: 1–3 capsules daily.

Goes well with

Glycine, reduced Glutathione – for supporting glutathione levels

Artichoke, Broccoli – for liver health

Chlorella, Ginseng – for exposure to ethanol

Maintain by Rohtos Labs – for a concerted antioxidant effect

Milk Thistle Extract

Milk thistle extract is an herbal extract derived from the milk thistle plant, also known as Silybum marianum. Milk Thistle is originally a native of Southern Europe through to Asia. It is now found throughout the world. 

The extract consists of 80% silymarin and 20% fatty acids, including linoleic acid. Silymarin is a complex mixture of polyphenolic molecules, including seven closely related flavonolignans.

Nopal cactus extract

Nopal cactus, Opuntia ficus-indica, is a species of cactus, likely having originated in Mexico. It has long been a crop plant grown throughout arid and semiarid parts of the world. 

Nopal is high in antioxidants, vitamins, and minerals. It contains the flavonoids kaempferol and quercetin.


Quercetin is a well researched flavonoid. It is found in many plants and foods, such as red wine, onions, green tea, apples, berries and Ginkgo biloba. 

Like some other flavonoids, quercetin has a wide array of health benefits. It is synergistic with other flavonoids, enhancing their properties.


N-Acetylcysteine (NAC) is an acetylated form of amino acid L-cysteine, a glutathione precursor.

NAC is beneficial for the liver and lungs, and for maintaining the body's anitoxidative capacity. 


Taurine is an amino acid, a chemical that is a required building block of protein. Taurine is found in large amounts in the brain, retina, heart, and platelet blood cells called. The best food sources of taurine are meat and fish.

Taurine is widely beneficial for the body and has a key role in antioxidative defence systems in the liver.


Piperine is the alkaloid responsible for the pungency of black pepper, Piper Nigrum. Piperine can inhibit key liver enzymes that would otherwise break down other molecules faster. Due to this, it is ingested alongside supplements to increase their absorption rates. 

The purpose of piperine in Shield is to increase the absorption and bioavailability of other bioactive compounds and therefore make Overpower more effective. Piperine in Shield is extracted from black pepper and has 95% purity.

Alpha lipoic Acid

Alpha lipoic acid is a mitochondrial compound involved in energy metabolism. It is synthesized in the body and can be consumed through eating meat. It is also present in some fruits and vegetables in trace amounts.

Alpha lipoic acid is a versatile antioxidant compound due to its solubility in both water and lipids (fat).

Choline bitartrate

Choline bitartrate is a cholinergic compound, ie. a substance which contains choline, and which raises choline availability when consumed. Choline is found in high amounts in eggs.

Choline is an essential nutrient for the liver. Though the liver can make small amounts, the majority must be obtained from diet


Magnesium is an essential dietary mineral and the second most prevalent electrolyte in the human body. Prominent sources of magnesium include nuts and leafy vegetables.

Magnesium deficiencies are common in the western diet. Magnesium is required for the synthesis of glutathione in the body.


Zinc is an essential mineral involved in antioxidant enzymes, brain function and the immune system, among many other biological roles. Zinc plays a pivotal in the maintenance of liver function.

Meat, egg, and legume products are common sources of zinc. Different forms of zinc contain different amounts of elemental zinc, which refers to the weight of the zinc molecule by itself.


Selenium is an essential mineral that can be found in organic and inorganic forms. The main active dietary form is selenomethionine, the form used in Shield.

Selenium is consistently high in seafood and generally high in meat and eggs, but subject to considerable variation depending on feed and animal supplementation. Dairy is also a significant source, as are nuts and seeds. Brazil nuts contain the most selenium per gram of any measured food.

Selenium is essential for glutathione metabolism.