Resistance

Vitamin C (ascorbic acid) is the pure form of vitamin C. There are also buffered forms of ascorbic acid, which are generally more easily tolerated by the gastrointestinal tract. Vitamin C is a water-soluble vitamin found naturally in various fruits and vegetables, such as citrus fruits, kiwi, bell peppers, and broccoli. Vitamin C is often added to dietary supplements in powder, tablet, or capsule form to supplement daily intake.

Vitamin D is a fat-soluble vitamin that the body can produce naturally under the influence of sunlight (UV radiation). Vitamin D is also found in foods such as oily fish (herring, salmon, mackerel), meat, and eggs. Vitamin D production and absorption vary from person to person, depending on factors such as skin pigmentation, age, and sunlight exposure.

Vitamin A is a fat-soluble vitamin found in foods such as liver, eggs, dairy products, carrots, spinach, and other orange or green vegetables. In the body, vitamin A is involved in various biochemical processes and is present in cells. It can be found in various forms, such as retinol in animal products and carotenoids in plant foods. Vitamin A is stored in the liver and can be supplemented with food. It is an important part of a varied diet.

Astragalus, also known as fleshy box pod (Astragalus membranaceus), is a plant native to Asia. The root of the plant has been used in traditional Chinese culture for thousands of years.
Astragalus holds an important place in this tradition and is associated with the concept of "qi," which represents life energy. Astragalus is used in a variety of applications, such as herbal teas, powders, and other herbal preparations.
The root contains various natural plant compounds and is valued for its long history of traditional use.

Wheatgrass is a plant that naturally contains vitamins A, C, and E, as well as minerals like calcium, magnesium, and iron. It also contains chlorophyll and natural enzymes. The chlorophyll content of wheatgrass is significant.

The white willow (Salix alba), also known as the "white willow" in English, is a common tree in the Netherlands. The bark of the willow naturally contains salicin, a glycoside identified as early as 1828 by the German pharmacist Johann Andreas Buchner.
The white willow is valued for its long history of use and is botanically interesting for its characteristic leaves and growth habit.

Woddruff Sweet (Galium aparine) belongs to the star-leaved family (Rubiaceae). This plant is known for its ability to cling to objects it comes into contact with, thanks to the numerous hooks on both the stem and fruits. This causes plants and fruits to get caught in the fur of animals, resulting in widespread dispersal over great distances.
Cleaver leaves are widest above the middle and have one central vein. They grow together in whorls of seven. These leaves also have hooks, albeit less than the rest of the plant. The stem is thickened at the tips.

Yarrow (Achillea millefolium) is a herbaceous plant in the daisy family (Asteraceae). It is a hardy perennial species common in the Netherlands and other parts of Europe. The plant is recognizable by its finely divided, feathery leaves and small flower heads, which are usually white but sometimes have a light pink tinge.
Yarrow has a long history and has been described in botanical and historical sources for centuries. The plant is named after the Greek hero Achilles, who, according to tradition, used yarrow, contributing to the herb's fame in classical antiquity.

Zinc bisglycinate is a chelated form of zinc, in which the mineral is bound to two molecules of the amino acid glycine. This form is known for its good bioavailability. Zinc occurs naturally in foods such as meat, fish, nuts, seeds, and whole grains, and is available in various supplement forms. Zinc bisglycinate is a stable, easily absorbed source of zinc.