Cholecalciferol is the natural form of vitamin D produced by the skin under the influence of sunlight. Additionally, vitamin D3 is found in animal foods such as fatty fish, eggs, and liver. The vitamin D used is derived from a plant source. Compared to other forms of vitamin D, cholecalciferol is efficiently absorbed and converted by the body into the biologically active form required for numerous bodily functions. Vitamin D3 contributes to normal absorption and utilization of calcium and and phosphorus, supports the maintenance of strong bones and teeth, and aids in the normal functioning of the immune system and muscles.

Zinc is an essential trace element involved in hundreds of enzymatic processes in the body. It plays an important role in cell growth, wound healing, protein synthesis, and the normal functioning of the immune system.
Zinc is naturally found in foods such as meat, seafood, dairy products, eggs, whole grains, legumes, nuts, and seeds. The absorption of zinc from animal foods is generally better than from plant-based sources.
A zinc deficiency can lead to reduced immunity, slower wound healing, hair loss, skin problems, decreased appetite, loss of taste and smell, and increased susceptibility to infections.

Iron bisglycinate is a highly absorbable form of iron where iron is bound to the amino acid glycine. This form contributes to the normal formation of hemoglobin and red blood cells, the transport of oxygen in the body, normal energy metabolism, and helps reduce fatigue and tiredness. In addition, iron supports the normal function of the immune system and normal cognitive function.

Iron bisglycinate is often used as a nutritional supplement because this form is generally better tolerated by the gastrointestinal tract than some other forms of iron. It is a suitable form for people who need extra iron or have difficulty absorbing enough iron from their diet.

Vitamin C is an essential, water-soluble vitamin that plays an important role in the immune system, the protection of cells from oxidative stress, collagen production, normal energy metabolism, and helps to reduce fatigue.
Vitamin C is mainly found in fruits and certain vegetables such as citrus fruits, berries, bell peppers, and broccoli. When someone follows a keto diet, fruit intake is often severely restricted due to its carbohydrate content, which eliminates an important source of vitamin C.

Methylcobalamin is the natural, biologically active form of vitamin B12.
Unlike other forms, it does not first need to be converted in the body, making it directly available for absorption and use.
Vitamin B12 plays an essential role in various processes in the body, including energy production, the functioning of the nervous system, and the production of red blood cells.
In nature, vitamin B12 is only found in animal products such as meat, fish, eggs, and dairy. Those who do not consume animal products must resort to fortified foods or dietary supplements.

L-methionine is an essential sulfur-containing amino acid that the body cannot produce itself and therefore must be obtained through diet. It plays an important role in the synthesis of proteins, the formation of other sulfur-containing compounds in the body, and supports processes such as the production of creatine, collagen, and the protection of cells against oxidative stress.

L-methionine is primarily found in protein-rich foods such as meat, fish, eggs, dairy products, nuts, seeds, and legumes. Because methionine is involved in protein synthesis and various repair processes in the body, adequate intake is important, especially during periods of increased physical exertion, growth, or tissue repair.

L-Glutamine is an amino acid that plays an important role in the body, especially in the building and repair of tissues. Unlike essential amino acids, the body can produce glutamine itself, but in periods of stress, illness, or intense exercise, the need may be higher than what endogenous production can supply.
It is an important energy source for rapidly dividing cells, such as intestinal cells and immune system cells.
Although glutamine is found in both animal and plant-based foods (such as meat, fish, dairy, legumes, and grains), certain groups such as athletes, people with intestinal problems, or those recovering from illness may benefit from a higher intake.

Echinacea root extract is a herbal extract derived from the root of the Echinacea plant (purple coneflower), which is traditionally used to support immunity. It contains various bioactive compounds that can stimulate the immune system.
The extract is primarily known for its role in helping to protect against colds and respiratory infections. In addition, echinacea also has anti-inflammatory and antioxidant properties, which contribute to overall health.
It is often used during periods when immunity could use extra support, such as during cold weather, stress, or fatigue.

Beta-glucans are soluble dietary fibers that occur naturally in oatmeal, barley, mushrooms, and yeast, among other things. They are best known for their positive influence on the immune system and overall health.
These fibers can support the immune system by activating certain immune cells, allowing the body to respond better to pathogens. In addition, beta-glucans also contribute to maintaining healthy cholesterol levels and stable blood sugar levels.
Although beta-glucans can be absorbed through food, intake can vary depending on dietary patterns.