Glutathione (GSH), a molecular weight 307 tripeptide consisting of L-g-glutamyl-L-cysteinyl-glycine, is a significant low-molecular-mass thiol compound found in both plants and animals. By serving as a cellular thiol “redox buffer,” it prevents the toxicity associated with cysteine while assisting in the maintenance of a specific thiol/disulfide redox potential. Glutathione can be found in a multitude of configurations, one of which is glutathione disulfide (GSSG), which is generated during oxidation. Additionally, glutathione-cysteinyl disulfides can form on proteins. While it is common to represent total glutathione as GSH plus twice the GSSG levels, this expression may fail to account for substantial quantities of bound glutathione. Enzyme-catalyzed steps comprise the synthesis of GSH; its degradation results in the liberation of constituent amino acids. Glutathione (GSH) plays a crucial significance in redox reactions, disulfide synthesis, and thioether and thiolester formation. These biological functions are facilitated by GSH peroxidases and glutathione transferases. [R]

Although not designed for human consumption, this nasal product developed by RCD.Bio serves as a valuable instrument for scientists investigating the impacts of the compounds in question. It is hypothesized that nasal spray administration ensures optimal absorption, thereby facilitating the efficient delivery of glutathione to its intended sites. To improve the understanding of Glutathione Nasal Spray and its prospective uses, RCD.Bio attempts to establish a foundation for scientific investigation. The application of this synthetic peptide by researchers can yield novel insights that enhance comprehension of its biological mechanisms and potential therapeutic applications.

Key Features

RCD.Bio offers Glutathione  with the following specifications: [R]

  • A purity of 98%, verified by third-party laboratory testing.
  • Available in nasal spray form: 10cg per spray/10ml/1mg
  • CAS No:  70-18-8
  • Chemical Formula: C10H17N3O6S
  • Molar Mass: 307.32 g·mol−1
  • IUPAC Name: (2S)-2-amino-5-[[(2R)-1-(carboxymethylamino)-1-oxo-3-sulfanylpropan-2-yl]amino]-5-oxopentanoic acid

How does  Glutathione Nasal Spray Work?

When administered via nasal spray Glutathione gives more efficient to its known mechanism:

Glutathione, a key player in our body’s defense system, works as a potent antioxidant by effectively neutralizing various harmful free radicals. Through a mechanism primarily involving hydrogen transfer reactions, glutathione efficiently tackles radicals like ·OH and ·OOH, forming S-centered radicals and contributing to a wide range of protective actions. Its ability to scavenge diverse free radicals showcases its role in safeguarding our cells from oxidative stress.

By analyzing the correlation between nitric oxide metabolism, glutathione, and blood pressure regulation, a study aims to explore the potential contribution of glutathione metabolism disruptions to the pathogenesis of age-related hypertension. In order to obtain a comprehensive understanding of the influence of glutathione on blood pressure, it is imperative to recognize its role in inhibiting nitric oxide, an essential regulator of blood vessel function, and protecting against oxidative stress. To achieve this, glutathione facilitates the production of nitrosothiols and nitrosohemoglobin, both of which contribute to the regulation of nitric oxide bioavailability. The vasodilatory effect of glutathione is mediated by the synthesis of S-nitrosothiol. A deficiency in these beneficial compounds may result in impaired vasodilator responses, which could potentially exacerbate hypertension.[R]

 In order to apply the proposed mechanism for glutathione (GSH) in Parkinson’s disease (PD), GSH must be administered intravenously. The concept is that by reacting with the harmful compound peroxynitrite, GSH inhibits its ability to cause further damage to nitric oxide (NO). This interaction facilitates a progressive discharge of NO, thereby prolonging its efficacy and providing protection against neutralization by superoxide. The potential therapeutic advantages of this procedure reside in the capacity of GSH to counteract persistent oxidative harm, which is a substantial factor in the advancement of Parkinson’s disease.

Although there is evidence indicating that intravenous administration of GSH may supply the brain with substances required for GSH synthesis, particularly cysteine, which is involved in the maintenance and replenishment of intracellular GSH levels, rigorous scientific investigation is required to confirm the efficacy if GSH promotes lower levels of its effects.  [R]

The scientific basis behind the benefits of  Glutathione  Nasal Spray

Numerous research investigations and trials on animals suggest that   Glutathione  may have a number of benefits. 

Glutathione, recognized as a biological antioxidant and often referred to as the master antioxidant, plays a crucial role in maintaining living cells’ GSH levels. Several research investigations and animal trials strongly indicate that Glutathione may offer various benefits in scenarios such as cystic fibrosis , multiple sclerosis and other metabolic deficiencies . Below are some of the studies:

Parkinson’s disease 

In a notable study conducted to address the challenges with neurodegenerative disorders such as Parkinson’s disease (PD), researchers explored the potential benefits of a unique solution – intranasal glutathione. Is glutathione depletion harmful in Parkinson’s disease? Yes as it i a depletion of reduced glutathione, is antioxidant in the body. This depletion or gsh deficiency is believed to contribute to the progression of the disease. Researchers sought to provide a novel approach by investigating the safety and tolerability of delivering glutathione through a nasal spray, aiming to mitigate the impact of reduced glutathione levels in research subjects with PD.

The results of the study revealed promising findings.  Research subjects with PD were administered intranasal glutathione in different doses, and after three months, no substantial differences were observed in the number of adverse events among the groups. This suggests that the nasal spray delivery of glutathione was well-tolerated by research subjects with Parkinson’s disease, opening the door to a potential solution for addressing the challenges posed by the depletion of this vital antioxidant. As further research unfolds, this innovative approach may offer hope for individuals living with problems with central nervous system diseases particularly Parkinson’s disease and pave the way for new avenues in disease management of improved cognitive function targets, brain cells function and brain fog. [R]

Skin Picking Disorder and Ulcerative Dermatitis

With substantial consequences for quality of life and the potential for life-threatening complications, Skin Picking Disorder presents considerable obstacles, affecting 4% of the general population. Typically, the majority do not experience adequate relief from conventional psychoactive medications. In an effort to develop a more efficacious remedy, scientists established a correlation between human Skin Picking Disorder and Ulcerative Dermatitis in mice. This correlation was founded on commonalities in mechanisms, behavior, and epidemiology, which also encompassed trichotillomania and other skin picking disorders.

The potential therapeutic effects of intranasal glutathione on mice with Ulcerative Dermatitis were investigated. Significantly reduced lesion severity was observed in mice that were administered intranasal glutathione; these findings were remarkable. Significantly, within two to four weeks, a considerable proportion of mice demonstrated full resolution of lesions. Intranasal glutathione may have curative potential for mouse ulcerative dermatitis, according to these findings, which represent a pivotal advancement. The study underscores the importance of conducting additional research on intranasal glutathione as a potential treatment for skin picking disorder, trichotillomania, and other body-focused repetitive behavior disorders, in addition to ulcerative dermatitis, due to the difficulties associated with various patients developing tolerance to other compounds.[R] Expanding upon the encouraging results observed in rat models, additional research is necessary to examine the effectiveness and safety of intranasal glutathione in human subjects.


Recent research indicates that oral glutathione may have promising benefits, despite the fact that its clinical efficacy is still unknown due to absorption limitations. Unhealthy skin accelerate aging, vital topical application of 2.0% oxidized glutathione and oral glutathione at a dosage of 500 mg/day have demonstrated promise in enhancing the pigmentation of sun-exposed areas of skin, as determined by the skin melanin index. In addition, glutathione exhibits a propensity to enhance the elasticity, collagen, and UV spots of the skin. The promising results of this study underscore the potential for glutathione to have a beneficial impact on skin health and aesthetics. However, they also emphasize the necessity for additional research to confirm its ability to improve the appearance of the skin. More investigation is required to delve into the potential merits of intranasal glutathione spray, which is recognized for its ability to enhance absorption and thus potentially deliver more substantial advantages for the health of the skin.[R]


In the realm of cancer research, the role of glutathione has emerged as a critical factor. This abundant natural tripeptide plays essential roles within cells, from antioxidation to immune system response modulation and detoxification of harmful substances. However, in the context of cancer, the dynamics of glutathione metabolism can be complex. On one hand, it aids in removing carcinogens, crucial for maintaining cell health. Yet, elevated glutathione levels in certain cancer cells can confer resistance to chemotherapy, impacting the efficacy of treatment in cancers affecting areas like bone marrow, breast, colon, larynx, and lungs.

To address this intricate challenge, researchers investigated the potential of glutathione modulation as a tool to enhance anti-cancer therapies. Utilizing glutathione as a nasal spray has sparked interest, potentially offering an avenue to augment absorption. However, further research is indispensable to ascertain the extent of the nasal spray’s efficacy. Understanding how glutathione, delivered via nasal spray, influences absorption may pave the way for more effective interventions.[R]


In hypertension, where the risk increases with age, the relationship between oxidative stress and the antioxidant defense system is crucial. Glutathione, a vital intracellular redox buffer, plays a pivotal role in combating oxidative stress and maintaining blood pressure. Altered glutathione-related parameters in hypertension suggest a connection between the glutathione-related redox system and high blood pressure. A recent review highlights how glutathione preserves nitric oxide bioavailability, crucial for blood pressure regulation. The review also points to a potentially overlooked hypertensive mechanism related to impaired vasodilator responses. Understanding disturbances in glutathione metabolism emerges as a key factor in explaining age-dependent increases in blood pressure, presenting potential avenues for therapeutic exploration.[R]


The study shows that when streptozocin causes diabetes, there is a noticeable drop in the amount of glutathione in the liver and less cytosolic superoxide dismutase (SOD) activity in important organs. Notably, insulin treatment works to bring back normal levels of glutathione in the liver, showing that it can reverse the loss of glutathione caused by diabetes. Also, both oral glutathione and insulin treatments improve cytosolic SOD activity in the kidney cortex and liver, which shows that they may be able to slow down the decline in antioxidant defenses that comes with diabetes. These results show that insulin and oral glutathione may be able to help with important parts of the antioxidant imbalance that comes with diabetes. This could lead to new ways of treating insulin resistance and the oxidative stress that comes with it.[R]

Physical exercise

Intense concentric physical exercise poses a challenge to the redox balance of glutathione in the blood, as evidenced by a substantial increase in oxidized glutathione (GSSG) levels immediately following exhaustive workouts in both trained humans and rats. The disturbance in the glutathione redox status correlates with elevated lactate-to-pyruvate ratios during exercise. However, the study unveils a remarkable solution—administration of antioxidants such as oral vitamin C, N-acetyl-L-cysteine, or glutathione effectively prevents the oxidation of the blood glutathione pool induced by exhaustive physical exercise in rats. This discovery holds promise for mitigating the oxidative impact of strenuous exercise, showcasing the potential benefits of antioxidant interventions in preserving glutathione balance during periods of intense physical activity.[R

 Immunological Functions

The intricacies of immune function hinge on the delicate balance of glutathione levels within lymphoid cells. Even slight fluctuations in intracellular glutathione can profoundly impact lymphocyte functions, with certain activities favored by high antioxidant glutathione levels and others by oxidative conditions with low glutathione. While healthy individuals typically maintain an optimal glutathione level, diseases associated with cysteine and glutathione deficiency, such as human immunodeficiency virus (HIV) infection, reveal a potential solution. Cysteine supplementation has shown remarkable benefits in HIV-infected patients, leading to a significant increase in immunological functions, including the nearly complete restoration of natural killer cell activity. This suggests that cysteine supplementation may hold promise in addressing immunological deficits associated with low plasma cystine levels in various conditions, presenting a potential avenue for therapeutic intervention.[R]


The information presented here is for educational purposes only and should not be construed as medical advice.  Glutathione is intended for laboratory research use only and is not intended for human consumption.

Frequently Asked Questions

Is  Glutathione Nasal Spray  legal?

Glutathione is available as a dietary supplement and is generally considered safe when used as directed. As a naturally occurring antioxidant produced in the body, it plays a role in various cellular functions.

However, the legality of specific formulations or administration methods, such as glutathione nasal spray, can vary depending on the regulations of the country or region. As of now, the Food and Drug Administration (FDA) does not regulate GSH Nasal spray. It is important to note that over 2000 individuals have received prescriptions for intranasal glutathione through Key Pharmacy, a compounding pharmacy in Kent, WA, since 2003.

Please be aware that RCD.Bio only sells  Glutathione  spray for research purposes and not for human consumption. It’s crucial to stay informed about local regulations and guidelines, and consult with healthcare professionals before considering the use of such products.

Where Can I Buy Glutathione Nasal Spray  online?

When buying Glutathione Nasal Spray , it is important to choose a reputable seller who provides quality products. At, each product is accompanied with a third-party-issued Certificate of Analysis showing the identification, purity, and concentration of our product.


In conclusion, the fact that RCD.Bio offers Glutathione Nasal Spray for sale signifies a substantial advancement in the investigation into the potential advantages of the compound. Tripeptide glutathione, which is essential for redox reactions, disulfide synthesis, and oxidative stress protection, finds utility in numerous domains, including but not limited to cancer, hypertension, diabetes, physical exercise, and immunological functions. The RCD.Bio-offered nasal spray delivery method, which is distinguished by its specifications guaranteeing high purity and accurate dosing, creates opportunities for effective absorption of glutathione, which may potentially enhance its therapeutic effects.

Promising results have been observed in scientific investigations, including the renowned study on Parkinson’s disease, which suggest that intranasal glutathione administration may be effective in addressing particular health issues. Moreover, investigations into various physiological functions, cancer, hypertension, skin disorders, physical exercise, and immunological processes highlight the multifaceted potential advantages of glutathione. This expands the scope for future scientific inquiry and the development of clinical applications. As the scientific community further explores the complexities of glutathione’s mechanisms and potential therapeutic uses, the Glutathione Nasal Spray from RCD.Bio becomes a valuable instrument for researchers seeking to fully exploit the advantages that this vital tripeptide provides.


Please take note of the scientific applications of this product and carefully read our Terms and Conditions before making a purchase from By completing your order and submitting payment, you agree to abide by our Terms and Conditions. Please be aware that the product packaging may differ slightly from the images displayed on our website.

If for any reason you are not completely satisfied with the product you receive, please contact us at [email protected]. Our team is dedicated to ensuring customer satisfaction and will be happy to assist you.

PLEASE NOTE: All products offered by are strictly intended for laboratory and research purposes only. They are not intended for use on animals or humans.