Vitamin D is a fat-soluble nutrient and steroid hormone, which regulates more than 1,000 bodily functions.

The benefits of Vitamin D on testosterone production are well evidenced.

Studies have shown that men with sufficient vitamin D levels have significantly higher testosterone than those with low levels.

Studies have also shown that supplementing with Vitamin D can increase free and total testosterone up to 25%.

Vitamin D has been clinically proven to:

• contributes to the normal function of the immune system.
• contributes to the maintenance of normal bones.
• helps maintain normal muscle function.

Bone loss, low testosterone, compromised immunity and reduction of sperm quality are
just a few results of vitamin D deficiency.

It's estimated that around 80% of the UK population have sub optimal
levels of Vitamin D.

Vitamin C (ascorbic acid), a powerful antioxidant and water-soluble vitamin.

This means that it dissolves in water and is delivered to the body’s tissues but is not well stored, so it must be taken daily through food or supplements It helps the body’s detoxification pathway.

It enhances liver function by promoting the production of detoxifying enzymes.

These enzymes assist in breaking down toxins and facilitating their elimination from the body including removing excess oestrogen.

It also plays a proven role in:

• Our endocrine health which controls hormone production, requires vital levels of this nutrient.
• Managing cortisol levels – Vitamin C is rapidly depleted during stress.
• Elevated cortisol levels inhibit testosterone production – thereby keeping levels optimal reduce this risk.
• Helps optimal functioning of the nervous and immune systems.
• Function of the immune system
• Protects DNA, proteins, and lipids from oxidative damage – vital in pro aging.

Our formulas are the only men’s hormonal health supplements that include all the B Vitamins.

The B-complex vitamins have dramatic mood-elevating effects — more so than almost any other nutrient.

The family helps the body and mind stay healthy, sharp, energetic, balanced, and they play a crucial role in the detoxification process.

The master controller of hormones - the endocrine system - needs the B
vitamins to assist in the production and metabolism of hormones and neurotransmitters.

These water-soluble nutrients cannot be stored by the body – needing daily intake.

Each plays an essential role and are co-factors for many other nutrients. Deficiency in one can impact the way the other’s work, which is why there are major benefits from including them together.

Thiamine plays a vital role in metabolism, helping the body break down and release energy from food. Thiamine also helps to metabolise glucose.

It’s also important in maintaining the health of the nervous system.

When you're deficient in vitamin B1, you might experience symptoms such as fatigue, muscle cramps, various pains, and a reduced tolerance to pain. Carbohydrate addiction can be a sign of being thiamine deficient.

Every single cell within your body requires vitamin Riboflavin and other B vitamins cannot perform their roles unless an ample amount of B2 is in the body.

Riboflavin is one of the essential nutrients needed in testosterone production.

One of the most crucial roles is its ability to inhibit testosterone 5 alpha-reductase.

This enzyme:

• Converts testosterone into DHT in the testicles and prostate.
• DHT is crucial for some functions in the male body.
  But needs regulation.
• Too much of it can lead to hair loss and other unwelcome health issues.

B3 is a natural human growth hormone booster that can lead to anabolic changes in building lean muscle mass and strength.
It helps regulate cholesterol levels, both good and bad, which indirectly improves testosterone levels.

Research has found that supplementation daily can:

• boost testosterone levels.
• reduce erectile dysfunction.
• lower lipid and cholesterol levels.
  
  

Leydig cells, cells in the testicles, take cholesterol and convert it to testosterone, making vitamin B3 a must have ingredient in our formulas.

B6 is clinically evidenced to regulates sex hormones. We can’t produce it ourselves, so it is essential we get this from other sources. The older we get the more B6 we require, making deficiency more likely.

It directly influences testosterone production by increased demand for androgens. When the body lacks B6, the brain increases oestrogen levels. This vitamin acts as a counterbalance for hormone regulation.

B6 also:

• Plays a major role in processing the protein, carbs, and fats you eat.
• It is involved in the autonomic processes of your nervous and immune systems.
• Helps with memory, cognitive functions, and energy levels,
  

Vitamin B9 is more commonly known by its synthetic supplemental form 'folic acid'.
It is crucial for proper brain function and plays an important role in mental and emotional health.

Folate is involved in:

• The synthesis of neurotransmitters like serotonin, dopamine, and noradrenaline.
• These neurotransmitters play a role in mood regulation and overall mental well-being.
• Works with vitamins B6 and B12 and other nutrients to control blood levels of the amino acid homocysteine.

It is common to have low levels of folic acid.

Chronically low folate levels can lead to mood disturbances, which may indirectly contribute to feelings of tiredness and fatigue.

Alcoholism, inflammatory bowel disease (IBD), and celiac disease can cause folic acid deficiency. Also, certain medications may lower levels of folic acid in the body.

Helps reduce tiredness and fatigue.

Vitamin B12 is a vital member of the B vitamin family, playing a pivotal role in various bodily functions, notably the formation of red blood cells. When there's a chronic shortage of vitamin B12 it can diminish the blood's ability to carry oxygen, leading to feelings of weariness and fatigue.

Biotin, plays a crucial role in our body and directly impacts our hormones:

It aids in proper endocrine function. A deficiency of biotin can lead to dysfunction in both the adrenal glands and the thyroid,It’s also required for healthy hair, skin and nails.

Pantothenic acid provides foundational support for both Phase I and Phase II detoxification. Vital for elimination of excess oestrogen and environmental toxins.

It is essential for testosterone production as the testes require B5 vitamin to help convert cholesterol to testosterone.

In addition:

• It plays an important role in the production of adrenal hormones.
• All the steroid hormones will be produced only with ample B5 in the system.
• It is involved in the production of neurotransmitters.
• Pantothenic acid is a stamina enhancer and prevents certain types of anaemia.

Deficiency can cause fatigue, headaches, nausea and tingling in the hands.

Magnesium is one of the most important minerals needed for life - involved in over 300 enzymatic processes in the body.

It has essential benefits on men’s hormonal health:

• It assists with managing SHBG molecules which bind the majority of testosterone in your body and make it inactive.
• It’s essential for the metabolism of nitric oxide, which is involved in the erection process.
• It boosts sleep quality which is vital for testosterone health as testosterone is replenished overnight – requiring good quantity and quality sleep.
• It promotes recovery from intense workouts, improves muscle health and lean body mass.
  
  Additional, clinically proven benefits include:
  
  
• Magnesium contributes to a reduction of tiredness and fatigue.
• Magnesium contributes to electrolyte balance.
• Magnesium contributes to normal functioning of the nervous system.
  
  Studies have shown that 50% of the population do not meet their daily requirement.
  

Important mineral that is crucial for male hormonal health.

It plays a key role in supporting the endocrine system and plays
a major role in testosterone production. 

Optimal zinc levels prompt Luteinizing hormone, which stimulates production of
testosterone in men.

Low levels are intrinsically linked to low testosterone levels and poor fertility.

Zinc has been clinically proven to:

• Support normal testosterone levels.
• Reduce tiredness and fatigue.
• Supports skin, hair and nails health.

Zinc deficiency affects over two billion people worldwide and ranks as the 11th major risk
around the globe in malnutrition.

Has been a popular supplement in fitness and athletic for a long time now and has numerous clinically evidenced benefits to men’s health.

It’s proven to:

• Helps muscle cells produce more energy:
• Supports muscle function boosting protein formation, muscle fibre size, and insulin-like growth factor 1 (IGF-1).
• Improves high-intensity exercise performance.
• Enhances strength, sprint ability, endurance, and resistance to fatigue.
• Speeds muscle growth – it’s the world’s most effective supplement for adding muscle mass.

It’s gaining attention for its multiple other benefits including:

• It’s ability to boost anabolic hormones.
• Being a powerful nootropic – boosting cognitive and brain function.
• Making it an exceptional ingredient to have in Silverback.
  

D-AA - an important amino acid and building blocks of protein, which we need to help build lean muscle mass and for energy.

It’s been well studied for its role in optimising testosterone production. Studies show it plays a role in regulating testosterone synthesis, but also importantly enhancing growth hormone production and muscle mass. It’s a popular ingredient in fitness and body building formulas.

It also has been shown to:

• Play a key role in boosting the parts of the brain that regulate hormone release.
• Trigger the release of luteinizing hormone (LH), stimulating the testes to pump out more testosterone.

A study found that 20 out of the 23 men taking D-aspartic acid had higher testosterone levels at the end of the study, with an average increase of 42%.

Nettle is beneficial for male hormones. It works primarily to keep testosterone active in the body for longer.


As most of the testosterone in your body is bound - in particularly to SHBG (sex hormone binding globulin) molecules – it renders the male sex hormone biologically inactive.

Nettle root has been shown to be effective in men’s hormonal healthy by:

• Binding with SHBG, making more biologically active testosterone freely available to your system.
• Blocking the enzyme that makes DHT (dihydrotestosterone) that contributes to male pattern baldness.

Scientifically known as Withania somnifera, Ashwagandha is a popular herb with many benefits and is particularly renowned for reducing stress and is classified as an adaptogen.

It helps maintain stamina, feelings or energy and vitality and promote physical
& mental wellbeing.

In terms of testosterone and hormonal balance, Ashwagandha has shown promise in supporting testosterone levels.

Studies have shown that supplementing over 16 weeks can help men with:

• Increased Testosterone Production
• Increased DHEA(Master Hormone) production
• Increase the production of LH (Luteinizing Hormone) which triggers the production of testosterone

Reducing cortisol (stress hormone) also helps promote hormonal balance. It also has powerful relaxation properties and can help as a sleep aid.

Both the root and fruit of the plant have been used medicinally in Traditional Chinese Medicine and Indian Ayurveda medicine for hundreds of years.

It’s grown in popularity in men’s health due to its androgenic effects including stimulating testosterone production.

It’s also been shown in studies to improve erection health. Men who took Tribulus for twelve weeks showed greater improvements in sexual function compared to those who received only placebo.

In addition, it’s believed to:

• Improve fertility.
• Offer protective effects against kidney stones.
• Have anti-inflammatory and antioxidant properties.
• Act as a diuretic and help treat urinary problems.

Saffron is the most expensive spice in the world.

It’s a powerful antioxidant, gaining significant attention for its cancer preventive properties – particularly in prostate health.

It has been shown to inhibit tumour formation and prevent DNA mutations that can activate cancer genes in some studies.

An analysis of six studies showed that taking saffron significantly improved erectile function, libido, and overall satisfaction in men, making it a must have ingredient in all our formulas.

In addition, saffron

• Provides protection for heart and blood vessel tissue.
• Supports cognitive and mood disorders associated with aging.
• Has multiple beneficial effects at a cellular level - making it a true “whole-body” supplement validating its centuries of use.

Boron is a trace mineral that has been shown to increase testosterone levels in men of all ages.

It is well studied, and scientists believe:

• It increases free testosterone by reducing sex hormone-binding globulin (SHBG) levels. Which binds testosterone from being available.
• It also reduces oestrogen levels which is one of the biggest drivers of low testosterone in men over 40.
• It can increase the effectiveness of vitamin D, which also contributes to healthy testosterone levels.
• Boron is also essential for the growth and maintenance of bones, which is vital for healthy ageing.
  
  Modern farming is depleting soil quality which has led to a decrease in boron intake.

Piperine is a beneficial plant compound found in black pepper that has numerous health benefits.

• Enhancing nutrient absorption
• Stabilisng blood sugar levels
• Combating cancer cell growth
• Decreasing inflammation
• Boosting brain function
• Protecting against inflammation
• Improving cognitive function, mood, allergies, cholesterol levels, and blood pressure