Cysteine
Other names for Cysteine
cysteine
cysteine hydrochloride
extract of fermented l-cysteine
l-cysteine
l-cysteine dihydrochloride
l-cysteine hcl
l-cysteine hcl monohydrate
l-cysteine hydrochloride
l-cysteine hydrochloride anhydrate
l-cysteine hydrochloride anhydrous
l-cysteine hydrochloride monohydrate
l-cysteine monohydrate hydrochloride
l-cysteine monohydrochloride
l-cystein hcl
Synopsis of Cysteine
History
Cysteine, a sulfur-containing amino acid, has a rich history of medicinal use dating back to the early 20th century. Its discovery in 1884 sparked interest in its unique properties, particularly its role in promoting detoxification and supporting the body’s antioxidant defense systems. Historically, cysteine was utilized in remedies designed to alleviate symptoms of bronchitis and chronic respiratory conditions, owing to its ability to break down mucus and ease congestion. Medical practitioners employed cysteine-rich broths and supplements to support patients with compromised lung function, notably before the advent of modern pharmaceuticals.
Over time, cysteine became recognized for its powerful antioxidant capabilities, primarily through its role as a precursor to glutathione, one of the body's most vital antioxidants. This led to its incorporation in various nutritional therapies aimed at enhancing immune function, protecting cells from oxidative stress, and promoting liver health. In traditional and contemporary herbal medicine, cysteine is often combined with herbs such as milk thistle, dandelion root, and turmeric to bolster liver detoxification and overall vitality.
These herbal combinations harness the synergistic effects of cysteine and plant-based antioxidants, resulting in complementary benefits for cleansing and rejuvenating the body. The positive impact of cysteine in both solo and blended remedies is well-documented, underscoring its invaluable contribution to health and wellness. As research continues to unveil its therapeutic potential, cysteine remains a cornerstone ingredient in nutritional and herbal formulations, appreciated for its safety, efficacy, and broad spectrum of benefits.
Traditional and scientific validation
Cysteine is a semi-essential amino acid that plays a vital role in human metabolism and health. Historically, cysteine has been recognized for its importance in protein synthesis, detoxification, and the biosynthesis of the antioxidant glutathione. Its use as a supplement or ingredient in nutritional products stems from its potential to support antioxidant defenses, promote healthy skin, and aid in recovery from illness or exercise-induced stress.
Scientific studies have explored the benefits of cysteine, particularly in its stable supplement form, N-acetylcysteine (NAC). Research has shown that NAC can replenish intracellular glutathione levels, offering protection against oxidative stress and supporting immune function. Clinical trials have demonstrated that NAC supplementation may be beneficial in respiratory conditions, such as chronic obstructive pulmonary disease (COPD), by reducing mucus viscosity and improving lung function. Additionally, cysteine has been investigated for its potential to support liver health, especially in cases of acetaminophen overdose, where it acts as a critical antidote.
Despite these promising findings, more research is required to fully validate cysteine’s broader health benefits in the general population. While some effects—particularly those related to antioxidant status and detoxification—are well-established, other claims, such as enhanced athletic performance or skin health, need further clinical support. Nevertheless, cysteine continues to be valued in nutritional products for its scientifically supported roles in cellular protection and metabolic support.
Cysteine is used for these health conditions
Acquired Immune Deficiency Syndrome (Scientific)
Alcoholism (Scientific)
Asthma (Scientific)
Autoimmune Disorders (Scientific)
Cancer Treatment (reducing side effects) (Scientific)
Chemical Poisoning (Scientific)
Chemotherapy (reducing side effects) (Scientific)
Chronic Obstructive Pulmonary Disorder (Scientific)
Convalescence (Scientific)
Cough (general) (Scientific)
Emphysema (Scientific)
Fatty Liver Disease (Scientific)
Hair (loss or thinning) (Scientific)
Hangover (Scientific)
Heavy Metal Poisoning (Scientific)
Hepatitis (Scientific)
Inflammation (Scientific)
Influenza (Scientific)
Liver Detoxification (Scientific)
Mercury Poisoning (Scientific)
Radiation Sickness (Scientific)
Wounds and Sores (Scientific)
Cysteine is used to support these body systems
Brain (Scientific)
Gastrointestinal Tract (Scientific)
Hair (Scientific)
Immune System (Scientific)
Liver (Scientific)
Lungs (Scientific)
Mucus Membranes (Scientific)
Nails (Scientific)
Skin (Scientific)