L-cysteine – action, dosage, reviews, price

Amino acids are extremely important in the context of diet as well as human physiology. The main representatives of this group were included in one term “basic amino acids”. Their action is irreplaceable in maintaining the balance of the human body, and their appropriate content is a preventive element against the development of a number of ailments. This group includes, among others, l-cysteine, which is becoming a permanent element of everyday supplementation of people who exercise and care for health.


  1. What is l-cysteine

L-cysteine, n-acetylcysteine or -amino-ß-thiolopropionic acid is a substance that in biochemical terms belongs to the group of 22 fundamental branched chain amino acids. L-cysteine shows endogenous character, so it is worth moving two important issues. First of all, the human system has the ability to independently produce it, which allows it to maintain its proper concentration. Second, l-cysteine due to its affiliation to biogenic amino acids, it is also indispensable in the human system to maintain normal metabolism. Its production takes place with the participation of two important compounds, which are methionine and serine. Transfer of the sulfur group from the first one to the second through the participation of adenosine triphosphate (ATP) leads to the formation of the l-cysteine molecule. Therefore, it can be safely said that in addition to its biogenic character, it is also a compound belonging to the group of so-called sulfur amino acids.


  1. L-cysteine – operation

One of the most characteristic features of n-acetylcysteine is the presence of a thiol group, which is extremely important for human metabolism and its proper functioning. This fraction is involved in the production of specific connections, which are professionally referred to as “disulphide bridges”. These bridges are extremely important for protein molecules, including muscle proteins, due to their tertiary structure. This, on the other hand, affects the stabilization of protein structure, increasing their resistance to degradation resulting, for example, from too high temperature, harmful oxidation processes or adverse catabolic reactions.

However, -amino-ß-thiolopropionic acid is primarily recognized as a potent detoxification compound. The purifying properties of l-cysteine is demonstrated by a number of processes in which it takes a significant part. One of the examples is its necessary participation in the production of glutathione, a substance considered to be the basic antioxidant of the human body. It is worth noting, however, that maintaining an adequate amount of glutathione is dictated not only by the appropriate level of l-cysteine, but also by glycine and glutamine. Another example is the use n-acetyl-cysteine as an effective remedy from the body of harmful heavy metals or accumulated alcohol during poisoning.

The detoxification character of l-cysteine is particularly visible in the case of the heart and the entire circulatory system. The majority of pharmaceutical preparations for cardiac patients contain this sulfuric amino acid, all due to the direct effect on the functionality of the vessels (membranes, arteries and veins), which are particularly vulnerable in case of hypertension or changes atherosclerotic. What’s more, the l-cysteine itself is used as a preventive supplement for people struggling with abnormal heart work.

Nevertheless, l-cysteine is not responsible only for “detoxifying” the human body. -amino-ß-thiolopropionic acid is an element of many creative processes, whose products are extremely needed. An example is chondroitynoszarkowy acid, a chemical compound being one from elements forming popular cartilage and connective tissue. They, however, condition the structure and durability of our skin, hair and nails.

On the other hand, l-cysteine, undergoing decarboxylation and oxidation processes, is transformed into the form of taurine, a sulfuric amino acid constituting one of the basic components of dietary supplements for exercising people. Taurine, in turn, is responsible for many important processes, such as the improvement of cellular metabolism, the improvement of creatine transfer to the muscles, and the improvement of information transmission within the nervous system.


  1. L-cysteine – dosage

The use of l-cysteine is usually based on oscillating doses between 50 and 500 mg. Scientific research assumes that the highest efficacy in the constant use of l-cysteine occurs with simultaneous supply along with vitamin C. Both preparations are recommended to mix with each other in a ratio of 13, which in practice translates into portions of 50 mg n-acetyl-cysteine and 150 mg ascorbic acid. The -amino-ß-thiolopropionic acid is usually in the form of easy-to-swallow tablets.


  1. L-cysteine – reviews

Although a cysteine in the form of a pure food supplement is still a kind of novelty, it is worth to take care of the correct content of this amino acid in our body. All because of the serious effects of its shortage. Too low level of -amino-ß-thiolopropionic acid will be manifested, among others, by the weakened condition of the skin and its products, increased chances of dangerous oxidative stress, disturbance of the proper environment for metabolism or excessive accumulation of unnecessary and harmful metabolic products.

L-cysteine as a solo preparation is still new on the market of dietary supplements, but nothing is lost. The sulfuric amino acid most often can be found in the composition of conglomerates of substances aimed at improving the regeneration or intensity of muscle anabolism. The best choice is to reach for amino acid matrices such as popular BCAA, EAA or SAA complexes. It is also worth mentioning that a large number of dietary supplements aimed at improving the condition of the skin, as well as some cosmetics, have in their formula n-acetyl-cysteine.


  1. L-cysteine – price

L-cysteine, as already mentioned, is still a novelty on the Polish market of dietary supplements and nutrients for athletes. That is, its priceto a large extent depends on the preparation in which it occurs. Mixtures of amino acids and supplements strengthening the condition of the skin and its products oscillate in a wide range of prices, which is dictated by a number of factors, the form of the product, the basis weight, the content of individual ingredients or the brand itself. In order to purchase l-cysteine, it is worth checking the sales outlets of dietary supplements as well as our online store.