S-Phenylacetyl Glutathione Capsules

About S-Phenylacetyl Glutathione Capsules

S-Phenylacetyl Glutathione is a phenylacetylated form of glutathione, the body's master antioxidant, engineered for superior bioavailability. The phenylacetyl group acts as a protective shield, preventing premature breakdown in the digestive system and allowing significantly higher cellular uptake compared to standard reduced glutathione. This supports antioxidant activity goals and promotes liver, respiratory, and cognitive function.

Our S-Phenylacetyl Glutathione Story

Traditional glutathione supplementation faced a fundamental problem: poor bioavailability. Even at high doses of 500-1,000mg, standard reduced glutathione struggles to reach cells effectively because digestive enzymes break it down before absorption. This forced users to take massive doses with inconsistent results, leaving many wondering if glutathione supplementation was worth pursuing at all.

We focused on solving this absorption challenge through molecular engineering. By attaching a phenylacetyl group to glutathione, we created a protective mechanism that fundamentally changes how the body processes this critical antioxidant. The enzymes that would normally degrade glutathione instead target the phenylacetyl group, cleaving it off and releasing bioactive glutathione directly inside cells where it's needed most. This allows the formula to deliver meaningful results at just 100mg per capsule, making it both more effective and more convenient than traditional approaches while supporting comprehensive cellular health supplements protocols.

Benefits

• Antioxidant Defense: Supports antioxidant defenses that help the body neutralize free radicals and maintain cellular resilience throughout the day.
• Liver Wellness: Supports healthy liver detoxification pathways as the body processes everyday metabolic demands.
• Cognitive Protection: Supports neuroprotective antioxidant activity linked to mental clarity and sustained focus.
• Mitochondrial Energy: Helps protect mitochondrial function to support steady cellular energy production and lasting vitality.

Together, these effects support antioxidant status, liver function, cognitive health, and mitochondrial energy production. S-Phenylacetyl Glutathione is a highly bioavailable form of glutathione, the body's master antioxidant, so each capsule provides broad support for how you think, feel, and function.

Quality and Standardization

• Lab-Tested Purity: We verify each batch through comprehensive third-party testing to ensure our S-Phenylacetyl Glutathione meets strict identity and purity specifications.
• Phenylacetyl Group Stability: The phenylacetyl modification is confirmed through analytical testing to maintain structural integrity, ensuring consistent bioavailability enhancement over standard glutathione forms.
• 100mg Standardized Dosing: Each capsule delivers precisely 100mg of S-Phenylacetyl L-Glutathione, providing optimal cellular uptake without the high doses required by reduced glutathione supplements.
• Quality Manufacturing Standards: Our S-Phenylacetyl Glutathione is produced in cGMP-compliant facilities and undergoes rigorous quality control testing to ensure potency and cellular health support reliability.

Mechanism of Action

• Enzymatic Protection Mechanism: The phenylacetyl group acts as a decoy substrate for glutathione-degrading enzymes, redirecting their activity away from glutathione itself and toward cleaving the protective phenylacetyl modification.
• Intracellular Transport Enhancement: S-Phenylacetyl Glutathione crosses cell membranes more efficiently than standard glutathione, bypassing the typical transport limitations that restrict cellular health supplement uptake.
• Tissue-Specific Accumulation: Research indicates this form preferentially accumulates in metabolically active tissues like the brain, liver, and lungs, where glutathione demand is highest for maintaining cellular function.
• Controlled Release System: Once inside cells, specific esterases cleave the phenylacetyl group in a controlled manner, releasing active glutathione precisely where it's needed for longevity support and cellular protection.

Overview of the Science

Glutathione is the body's central antioxidant, and research suggests that oral supplementation can meaningfully influence body stores. A randomized controlled trial reported that oral glutathione raised tissue glutathione levels over an extended supplementation period [1], while a comparative crossover study found that oral and sublingual forms may help lower markers of oxidative stress [2]. Work with liposomal glutathione similarly indicated that supplementation can elevate glutathione stores alongside markers of immune function [3], which supports its use for antioxidant and immune health.

The liver carries one of the highest demands for glutathione, and research points to its role in detoxification pathways. Reviews of glutathione content in liver disease describe how hepatic glutathione shifts under metabolic stress [4] and how dysregulated glutathione synthesis may accompany compromised liver status [5]. Experimental work on obstructive jaundice suggests that glutathione supplementation may help attenuate oxidative stress in hepatic tissue [6], and research examining genetic variation in detoxification capacity indicates that individual responses to liver support regimens can differ [7]. Glycine, a glutathione precursor, has also been studied for its metabolic effects [8].

In neural tissue, glutathione contributes to the antioxidant defenses that protect neurons and mitochondria. Research suggests that Nrf2-driven glutathione biosynthesis in glia may potently protect neurons from oxidative stress [9], and studies of DJ-1 indicate that glutathione synthesis is upregulated during oxidative challenge [10]. At the mitochondrial level, elevating glutathione has been shown to help protect mitochondria against peroxynitrite-induced oxidative stress in research models [11], and glutathione peroxidase 4 has been studied for its role in shielding cortical neurons from oxidative injury [12]. These findings point to glutathione's potential role in neuroprotective and mitochondrial antioxidant support.

[1] Richie JP Jr, Nichenametla S, Neidig W et al. European Journal of Nutrition. 2015.

[2] Schmitt B, Vicenzi M, Garrel C et al. Redox Biology. 2015.

[3] Sinha R, Sinha I, Calcagnotto A et al. European Journal of Clinical Nutrition. 2018.

[4] Vairetti M, Di Pasqua LG, Cagna M et al. Antioxidants. 2021.

[5] Lu SC et al. Liver Research. 2020.

[6] Chen J, Wu F, Yue L et al. Oxidative Medicine and Cellular Longevity. 2015.

[7] Schauer M, Mair S, Keiner M et al. International Journal of Molecular Sciences. 2025.

[8] Tan HC, Hsu JW, Tai ES et al. Scientific Reports. 2025.

[9] Shih AY, Johnson DA, Wong G et al. Journal of Neuroscience. 2003.

[10] Zhou W, Freed CR et al. Journal of Biological Chemistry. 2005.

[11] Drake J, Sultana R, Aksenova MV et al. Journal of Neuroscience Research. 2003.

[12] Ran Q, Gu M, Van Remmen H et al. Journal of Neuroscience Research. 2006.

Ingredients

S-Phenylacetyl Glutathione:

• S-Phenylacetyl L-Glutathione
• 100mg per capsule
• Phenylacetylated form for enhanced stability

The 100mg dosage represents optimal potency for S-Phenylacetyl Glutathione, requiring significantly lower amounts compared to traditional reduced glutathione due to its enhanced cellular uptake. This phenylacetyl modification eliminates the need for high-dose protocols typically required with standard glutathione supplementation, making it both more efficient and cost-effective. The precise molecular engineering ensures each capsule delivers maximum glutathione bioavailability while minimizing the potential for gastric degradation that commonly affects other glutathione forms. This targeted approach to immune and antioxidant support represents a significant advancement in glutathione delivery technology.

LACTOSE FREE

GLUTEN FREE

NON-GMO

VEGAN