• Takes part in biosynthesis of collagen and carnitine
• Improves mood
• Protects against oxidative stress
• Strengthens blood vessels
• Boosts immunity

Doctor's Best Vitamin C with Quali-C is a dietary supplement containing 1000 mg of vitamin C in one capsule. The Scottish brand Quali-C guarantees the highest quality of vitamin production, which is derived from GMO-free corn and wheat.

The preparation is gluten-free, contains no soybean and can be used by vegans and vegetarians without any worries.

Vitamin C is a water-soluble substance that must be supplied exogenously because the human body does not have an enzyme responsible for its biosynthesis. The synthetic ascorbic acid, closed in a capsule, has the same effect as that found naturally in fresh fruit and vegetables. It is worth noting that natural sources of vitamin C may be insufficient even at high intake, especially in people with increased demand, such as: ill individuals, athletes, cigarette smokers, pregnant and lactating women.

Influence on the immune system
Despite the wide range of positive effects on the body, most often the action of vitamin C is associated with the support of immunity, therefore it is recommended to take it both in the state of health and disease. By intensifying the synthesis of immunoglobulins and T lymphocytes - particles responsible for the fight against pathogens - it may shorten the duration of infection.

Protection against oxidative stress
Ascorbic acid, as an antioxidant, protects against free radicals that can degrade DNA. They also damage the wall of blood vessels and by oxidizing lipids are the primary cause of atherosclerosis, while destruction of collagen fibres in the skin leads to the formation of wrinkles, accelerating the aging process. In addition, vitamin C helps to regenerate other antioxidants, such as oxidized form of vitamin E, with which it acts synergistically.

In the era of thyroid conditions plague, it is worth mentioning that it is also protected against oxidative stress by vitamin C. Ascorbic acid not only has a prophylactic effect, but is also able to reverse structural damage to this organ to some extent.

Collagen synthesis
Vitamin C is essential for the metabolism of connective tissue (collagen formation), which occurs in every part of our body. For example: 90% of the eyeball is collagen, 60% of the liver is also collagen, and in the heart muscle it is as much as 40%. Being the cofactor of hydroxylase responsible for its creation, it determines the proper development of bones, cartilage and teeth. An appropriate level of vitamin C prevents scurvy and slows down the development of parodontosis. Moreover, it improves mechanical strength of blood vessel walls and accelerates wound healing.

Carnitine production
Vitamin C is also needed for the synthesis of carnitine, which is mainly found in the skeletal muscles and heart, and is responsible for the use of fatty acids to produce energy during exercise. In addition, L-carnitine reduces muscle fatigue during prolonged training. For this reason, athletes in particular should take care of the correct level of L-carnitine. Its deficiency will be manifested by weakness and atrophy of skeletal muscles, and in extreme cases, heart failure.

Influence on the nervous system
More than 50 different particles responsible for the transmission of impulses between nerve cells have been distinguished in the human body. In order to synthesize them, a sufficient amount of proteins, carbohydrates, fatty acids and vitamins, including vitamin C, is necessary. Vitamin C takes direct part in the production of noradrenaline and dopamine, which is worth remembering while taking care to maintain concentration and emotional balance. In addition, it protects against the development of Alzheimer's disease by neuroprotective action.

Effective cortisol reduction
People exposed to long-term stress should also take care of an adequate level of vitamin C, which reduces the level of cortisol. This enzyme, in the case of increased nervous tension, causes the ‘ejection’ of glucose into the blood. The increase of blood sugar level is a very positive and useful phenomenon if it lasts a few minutes and does not appear too often. The problem arises when, for example, a person has a stressful job and a high concentration of cortisol does not decrease. Then symptoms often associated with depression appear: problems with falling asleep, mental exhaustion, lack of motivation. Moreover, too high a level of cortisol may contribute to the development of insulin resistance over time.

Beneficial effect on the absorption of iron and folic acid
Ascorbic acid significantly facilitates the absorption of inorganic iron. Its absorption in the intestines, due to the existence of a mucosal barrier, without a sufficient amount of vitamin C is only 10%. The effects of deficiency are manifested, for example, by anaemia, whose symptoms include: pallor of the skin and mucous membranes, drowsiness, dizziness, chronic fatigue.

Folic acid (vit. B9) also owes its better absorption of vitamin C. It is worth remembering this when supplementing it during pregnancy, megaloblastic anemia (folate deficiency) or digestive disorders.

To sum up, Doctor's Best Vitamin C with Quali-C is a high quality supplement, which contains a dose adjusted to both the demand and the possibility of daily maximum absorption by the body. It can be used prophylactically to comprehensively support the body in its proper functioning.