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Home > Anti-aging Research > L-Glutathione

L-Glutathione

Specific Recommendations (to raise glutathione):

News & Research:

N-Acetyl Cysteine Effective for Bipolar Depression - Medscape, 6/10/11 - "oxidative stress and inflammation play a role in the pathophysiology of bipolar disorder ... NAC is a cysteine analogue shown to effectively raise plasma levels of the primary antioxidant, glutathione. NAC also modulates cytokines, glutamates neurotransmission, and enhances neurogenesis ... significant differences (P < .001) were found between baseline and week 8 for all study measures. Minimal side effects occurred" - Note: That seems like a high dose but I would think most would take a lower lower dose over a longer period of time which may be as effective. See NAC products at iHerb.
CLA may protect against elderly muscle loss - Nutra USA, 7/24/09 - "Supplementation with conjugated linoleic acid (CLA) prevented age-related muscle loss in mice ... After six months the researchers note that both the trans-10 cis-12 and CLA-mix showed “significantly higher muscle mass, as compared to corn oil and cis-9 trans-11 CLA groups” ... Both groups also exhibited increased cellular energy production (ATP), as well as higher levels of the antioxidant enzymes catalase and glutathione peroxidase in the muscles, compared to the corn oil and cis-9 trans-11 CLA groups" - See CLA products at iHerb.
Add-On Therapy Improves Depressive Symptoms In Bipolar Disorder - Science Daily, 9/2/08 - "sought to evaluate whether N-acetyl cysteine (NAC), an over-the-counter supplement that increases brain glutathione, might help alleviate depressive symptoms ... Glutathione is the brain’s primary antioxidant defense, and there is evidence of increased oxidative stress in bipolar disorder. Therefore, we studied the potential benefit of NAC treatment in bipolar disorder and found that it impressively remedied residual depressive symptoms" - See NAC products at iHerb.
Low Antioxidant Level May Damage Fetal Neurons - Science Daily, 12/20/07 - "Fetal neurons that have low levels of a vital antioxidant, glutathione, are the first to die when exposed to alcohol in cell culture and possibly in the living brain"
Depletion Of One Antioxidant Linked To Parkinson's In Mice - Science Daily, 12/20/07 - "mice suffering from a depletion of the antioxidant glutathione in dopamine-producing neurons developed nerve damage and symptoms associated with Parkinson’s disease (PD) in humans"
Glutathione: Antioxidant Supports Lung, Liver, Gastric and Cerebral Health while Guarding Against DNA Damage Article - vrp.com, 10/4/05
NAC supplement for brain damage in boys - Nutra USA, 5/4/04 - "Because it enhances the production of the enzyme glutathione, NAC is thought to both stave off disease and play an important role in boosting the immune system"
How to Boost Glutathione Levels - Dr. Murray's Newsletter, 7/30/03 - "When healthy subjects were given a single dose of up to 3,000 mg of glutathione researchers found there was no increase in blood glutathione levels.11 ... In contrast, blood glutathione levels rose nearly 50% in healthy individuals taking 500 mg of vitamin C.12 Vitamin C raises glutathione by helping the body manufacture it. In addition, to vitamin C, dietary sources of glutathione and several other nutritional compounds can help increase glutathione levels including N-acetylcysteine (NAC), alpha-lipoic acid, glutamine, methionine, and whey protein. Also, vitamin B6, riboflavin, and selenium are required in the manufacture of glutathione"
Oxidative Stress Linked to Cataract Formation in Diabetics - Doctor's Guide, 1/16/03 - "Whole blood glutathione levels and erythrocyte superoxide dismutase activities were lower, while plasma levels of thiobarbituric acid reactive substances were higher in patients with cataracts compared to controls ... The authors suggest that their findings underscore the vital role of glutathione as a lens antioxidant"
Getting More Glutathione? - Dr. Weil, 8/29/02 - "To my knowledge, the only supplement that effectively raises glutathione levels in the body is N-acetyl-L-cysteine (NAC). My colleague Kathleen Johnson, a dietician here at the Program in Integrative Medicine, tells me that other glutathione supplements are ineffective because they’re digested before they can get into the bloodstream"
Glutathione Protects Against Oxaliplatin Neurotoxicity - Medscape, 8/23/02
Peripheral Arterial Disease Responds to Glutathione Infusion - Medscape, 8/9/02 - "Oxidative stress is considered an important condition in the atherosclerotic process, favoring cellular and vascular damage ... Forty subjects with Fontaine stage II PAD received intravenous glutathione or saline solution twice daily for five days. Those receiving glutathione had significant improvements in pain-free walking distance (196 ± 15 vs. 143 ± 11 m; P<.04), macrocirculatory flow after treadmill test with plethysmography, postischemic hyperemia with laser Doppler flowmetry, and reduced time to flow motion"
The Wizard is Oz - Life Extension Magazine, 11/01 - "Best-selling author and nutritional guru to the rich and famous, Oz Garcia is singing the praises of the Life Extension Foundation and its products in his newest book, The Healthy High Tech Body, published in September 2001 ... Supplements at the top of Garcia's list of recommendations ... DHA ... NADH ... Alpah Lipoic Acid ... Acetyl-L-Carnitine ... An expanded list of his recommendations includes lycopene, gamma tocopherol, vinpocetine, SAMe, folic acid, carnosine, glutathione, DMAE, Huperzine A, probiotics, MSM, secretagogues, arginine pyroglutamate, IP-6, bioflavonoid formulas and grape skin/seed extracts"
Glutathione: New Supplement on the Block - WebMD, 7/30/01
Glutathione: The Eye Healer Within - Nutrition Science News, 4/01
Fighting Inflammatory Bowel Disease, Antioxidants Show Promise in Reducing Inflammation - WebMD, 4/10/01 - "scientists say a combination of antioxidants and drugs may help suppress the inflammation more than either approach could alone ... Grisham and colleagues gave a powerful antioxidant to mice with inflammatory bowel disease. The antioxidant, which was put in the animals' water, helped raise the level of a naturally occurring antioxidant called glutathione, he says. The amount of inflammation was significantly reduced after the mice drank the antioxidant-spiked water"
What is the difference between N-acetylcysteine and glutathione, and which one should I suggest to customers? - Nutrition Science News, 3/01
Lipoic Acid: The Universal Antioxidant - Nutrition Science News, 10/00
SILIPHOS™: Nature's Potent Liver Remedy - Dr. Murray - "One of the key manners in which silymarin enhances detoxification reaction is preventing the depletion of glutathione. As discussed above, the level of glutathione in the liver is critically linked to the liver's ability to detoxify. The higher the glutathione content, the greater the liver's capacity to detoxify harmful chemicals. Typically, when we are exposed to chemicals which can damage the liver including alcohol, the concentration of glutathione in the liver is substantially reduced. This reduction in glutathione makes the liver cell susceptible to damage. Silymarin not only prevents the depletion of glutathione induced by alcohol and other toxic chemicals, but has been shown to increase the level of glutathione of the liver by up to 35%. Since the ability of the liver to detoxify is largely related to the level of glutathione in the liver, the results of this study seem to indicate that silymarin can increase detoxification reactions by up to 35%"
Natural Substance Fights the Flu in Mice - WebMD, 4/17/00
Vitamin E Reverses Minimal Negative Effects of Exercise and Fish Oil - WebMD, 4/10/00 - "The researchers discovered that both exercise and fish oil deplete an important antioxidant called glutathione"
Solving Sinusitis - Nutrition Science News, 4/00
Detoxification for the Body & Mind - Nutrition Science News, 2/00
Staying Young Forever, Putting new research findings into practice - Life Extension Foundation, 12/99 - "lipoic acid is the only antioxidant that can boost the level of intracellular glutathione, a cellular antioxidant of tremendous importance. Besides being the body's primary water-soluble antioxidant and a major detoxification agent, glutathione is absolutely essential for the functioning of the immune system"
Cancer Prevention Diet - Nutrition Science News, 8/99
Second Sight - Nutrition Science News, 4/99
Can Cirrhosis be Prevented? - Nutrition Science News, 1/99
Antioxidants May Reduce Harmful Complications Of Diabetes - Doctor's Guide, 4/20/98
Antioxidant-Enhancing Drug Partly Reduces Noise-Induced Hearing Loss - Doctor's Guide, 9/12/97
Key Molecule Found Critical to Surviving HIV - Doctor's Guide, 2/24/97

Abstracts:

Deficient synthesis of glutathione underlies oxidative stress in aging and can be corrected by dietary cysteine and glycine supplementation - Am J Clin Nutr. 2011 Jul 27 - "Compared with younger control subjects, elderly subjects had markedly lower RBC concentrations of glycine (486.7 ± 28.3 compared with 218.0 ± 23.7 μmol/L; P < 0.01), cysteine (26.2 ± 1.4 compared with 19.8 ± 1.3 μmol/L; P < 0.05), and glutathione (2.08 ± 0.12 compared with 1.12 ± 0.18 mmol/L RBCs; P < 0.05); lower glutathione fractional (83.14 ± 6.43% compared with 45.80 ± 5.69%/d; P < 0.01) and absolute (1.73 ± 0.16 compared with 0.55 ± 0.12 mmol/L RBCs per day; P < 0.01) synthesis rates; and higher plasma oxidative stress (304 ± 16 compared with 346 ± 20 Carratelli units; P < 0.05) and plasma F(2)-isoprostanes (97.7 ± 8.3 compared with 136.3 ± 11.3 pg/mL; P < 0.05). Precursor supplementation in elderly subjects led to a 94.6% higher glutathione concentration, a 78.8% higher fractional synthesis rate, a 230.9% higher absolute synthesis rate, and significantly lower plasma oxidative stress and F(2)-isoprostanes. No differences in these measures were observed between younger subjects and supplemented elderly subjects ... Glutathione deficiency in elderly humans occurs because of a marked reduction in synthesis. Dietary supplementation with the glutathione precursors cysteine and glycine fully restores glutathione synthesis and concentrations and lowers levels of oxidative stress and oxidant damages. These findings suggest a practical and effective approach to decreasing oxidative stress in aging" - See l-glycine products at iHerb and NAC products at iHerb.
Antioxidative and Anti-Inflammatory Protection from Carnosine in the Striatum of MPTP-Treated Mice - J Agric Food Chem. 2010 Oct 6 - "The preintake of carnosine significantly attenuated MPTP-induced glutathione loss, retained the activity of GPX and SOD, diminished oxidative stress, and lowered inflammatory cytokines and nitrite levels as well as suppressed iNOS activity (P < 0.05). MPTP treatment significantly suppressed GPX mRNA expression and enhanced iNOS mRNA expression (P < 0.05). Carnosine preintake significantly elevated GPX mRNA expression and declined iNOS mRNA expression (P < 0.05). Preintake of carnosine also significantly improved MPTP-induced dopamine depletion and maintained 3,4-dihydroxyphenylacetic acid and homovanillic acid levels (P < 0.05). These results suggest that carnosine could provide antioxidative and anti-inflammatory protection for the striatum against the development of Parkinson's disease" - See l-carnosine products at iHerb.

Other possible l-glutathione suppliers: