Name: Pure Encapsulations NAC + Glycine Powder 159g - Peach, Ginger - Fairfield Nutrition Shop
Brand: Pure Encapsulations
SKU: PE-GLYNAC-159G
Price: 59.80 AUD
Availability: InStock

Question 1

Why this formulation and how does it work?

Accepted Answer

Most glutathione supplements face a straightforward problem: glutathione is a tripeptide that gets broken down in the gut before it can be absorbed intact. Liposomal glutathione addresses this partially, but NAC + Glycine takes a different approach entirely by supplying the two rate-limiting precursors your body needs to synthesise glutathione itself. This is sometimes called the GlyNAC approach in the research literature, and it&#8217;s backed by a more robust clinical dataset than most longevity compounds.
The free-form delivery matters here. Free-form amino acids don&#8217;t require protein digestion to become available, so they move into circulation quickly after mixing with water. Pure Encapsulations keeps the other ingredients minimal: potassium citrate, tri-magnesium citrate, purified stevia, and natural flavours. No artificial sweeteners, no magnesium stearate, no fillers. The peach-ginger flavour is genuinely palatable, which matters for something you&#8217;re taking daily long-term.
Role in Glutathione Synthesis
Glutathione is a tripeptide made from three amino acids: cysteine, glycine, and glutamate. Cysteine (provided here as NAC, a more stable and bioavailable precursor form) and glycine are the two that tend to become limiting, particularly as dietary intake often falls short and the body&#8217;s synthetic capacity changes with age. When both precursors are provided together, intracellular glutathione production is supported more effectively than with either alone. Research shows NAC and glycine together raised red blood cell glutathione by 53% in one study, with the ratio of active (reduced) to oxidised glutathione also improving.
Antioxidant Activity and Cellular Protection
Glutathione functions as one of the body&#8217;s primary endogenous antioxidants, present in virtually every cell. It provides antioxidant activity directly and also participates in recycling other antioxidants including vitamins C and E. Beyond antioxidant activity, glutathione is involved in cellular processes including the conjugation and excretion of compounds processed by the liver, and plays a role in maintaining the integrity of cell membranes. NAC itself also provides antioxidant activity independent of glutathione, via its free thiol group.
Respiratory Tissue and Immune Cell Support
NAC has a particular affinity for lung tissue and is involved in mucolytic activity, where its sulfur content allows it to disrupt disulfide bonds in mucus, affecting viscosity. It also provides nutritional support for epithelial cells and the cilia lining the respiratory tract. Glycine has been studied for its role in cytokine activity during periods of metabolic stress, with research suggesting it may influence TNF-alpha and IL-10 pathways involved in normal immune signalling.

Question 2

When should I consider this product?

Accepted Answer

This formulation provides support for cellular antioxidant pathways and glutathione precursor nutrition. It makes sense if you&#8217;re:

Over 40 and focusing on antioxidant wellness as part of a longer-term health strategy, given that glutathione precursor availability changes with age.
Working with a practitioner on a protocol that includes glutathione support, and looking for a precursor-based approach rather than direct glutathione supplementation.
Highly active or in a period of increased physical demand, where cellular antioxidant pathways are under greater load.
Focused on respiratory wellness and looking for nutritional support for lung tissue alongside dietary and lifestyle measures.

Supplement strategy: Many people introduce GlyNAC after establishing foundational antioxidant nutrition through diet and basic supplements like vitamin C and E. It&#8217;s commonly used alongside broader longevity-focused protocols, and the research suggests consistent daily use over weeks is needed to meaningfully raise glutathione levels. Some practitioners introduce this after dietary protein adequacy is established, since glycine and cysteine are also available from whole food sources.
⚠️ Not suitable for: Pregnant or lactating individuals. Not recommended for those under 18.

Question 3

How do I use this product?

Accepted Answer

Take one scoop (approximately 3.6 g total) daily, mixed into 8 oz (about 240 mL) of water. The manufacturer recommends taking it between meals rather than with food. Each scoop provides 1,800 mg of NAC and 1,800 mg of glycine in free-form. The 159 g container provides approximately 30 servings.
The powder dissolves readily in water and the peach-ginger flavour is designed to make daily compliance straightforward. If you&#8217;re sensitive to the taste of sulfur-containing compounds (NAC has a mild characteristic smell), mixing with cold water and drinking promptly works well.

Question 4

Why take NAC and glycine together rather than just NAC on its own?

Accepted Answer

Both amino acids are needed to make glutathione, and research shows the combination raises glutathione levels significantly more than either alone. NAC is often taken solo, but glycine is the other rate-limiting precursor, and the clinical data behind the combined approach is more compelling than for NAC in isolation for this specific purpose.

Question 5

How is this different from taking a glutathione supplement directly?

Accepted Answer

Glutathione taken orally is broken down in the gut before it can be absorbed intact, which limits how much actually reaches cells. By providing the precursors NAC and glycine, this approach lets your body synthesise glutathione intracellularly, where it&#8217;s needed. Liposomal glutathione is a partial workaround, but the precursor approach has solid clinical backing in its own right.

Question 6

How long before I&#8217;d expect to see a change in glutathione levels?

Accepted Answer

The clinical research used supplementation periods of two weeks or more to demonstrate measurable changes in red blood cell glutathione. This isn&#8217;t a product where you&#8217;d expect an immediate noticeable effect. Consistent daily use over several weeks is the relevant timeframe based on the available studies.

Question 7

Can I take this with my other supplements?

Accepted Answer

Generally yes, though the manufacturer recommends taking it between meals rather than alongside food. If you&#8217;re taking medications, particularly those processed by the liver or affecting the immune system, check with your healthcare professional first given NAC&#8217;s activity in hepatic pathways.

Weight	.22 kg
GTIN	7.31094E+11

Pure Encapsulations NAC + Glycine Powder 159g – Peach, Ginger

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