New Research Claims to Show Bioavailability of Oral Liposomal Glutathione. But does it really?

The Team Behind Continual-G Dives Into the Results of a New Study on Liposomal Glutathione — and Why It's Not Telling Us What We Need to Know.

FORT LAUDERDALE, Fla., April 1, 2026 /PRNewswire/ -- A new study has reported the effectiveness of raising glutathione levels in the blood through oral supplementation of liposomal glutathione. However, the team at Inid Research Labs that developed the breakthrough cellular glutathione supplement Continual-G sees a weak spot, not in the research but in the takeaway.

The study, which was recently published in the scientific journal "Antioxidants", reported that a single dose of liposomal glutathione could increase glutathione (GSH) levels in whole blood over a period of 10 hours and maintain these increases for at least a further 14 hours. Sounds great, doesn't it? However, the easy-to-miss, if not sneaky, part is that they saw the increases in whole blood.

"We need to keep in mind that whole blood is a mixture of plasma (liquid) and cells (red and white). If you just measure changes in whole blood as they did in this study, then you do not know if any observed increases are actually in the plasma, the cells, or both," said Rajan Shah, President of Inid Research Lab LLC, which owns Continual-G®. He further added, "All this study can really claim is that liposomal glutathione can survive digestion and reach the bloodstream, and that's it. Given that there is no known mechanism by which blood cells can take up intact glutathione from the plasma, it can only be assumed that it will stay in the plasma until it is eventually degraded. This can be of little benefit to your health as it is only inside cells (not in plasma) where this master antioxidant is needed to support cellular health and function."

In other words, while liposomal encapsulation may help glutathione survive gastrointestinal digestion, there is still no credible evidence to show it can get into your cells, which is what is required of a glutathione supplement. One might ask why these researchers did not go to the trouble of isolating cells from the blood to actually see if they had any increases in glutathione content?

Shah and the team at Inid Research developed Continual-G, a breakthrough cellular glutathione supplement consisting of a proprietary form of gamma-glutamylcysteine (GGC) called Glyteine®. GGC is the immediate precursor of glutathione. It can bypass the regulatory control of glutathione homeostasis, and in a similar single-dose clinical study was shown to boost glutathione levels in white blood cells within 2 hours. Once inside cells, GGC directly supports the body's natural production of glutathione, boosting it from insufficient to more youthful and healthy levels. GGC has a credible biochemical basis and clinical evidence of cellular bioavailability. Glutathione has no biochemical basis and still has no clinical evidence of cellular bioavailability.

About Continual-G®
Continual-G® is a brand of the dietary development firm Inid Research Lab, LLC. Launched in 2019, the global company focuses on the mission of developing dietary supplements that incorporate Glyteine®. This proprietary ingredient is a unique approach to cellular glutathione that provides the body with the tools necessary to increase its natural glutathione production. This critical difference has helped Continual-G® stand out, both in clinical studies and through customer feedback. Learn more about the benefits and backstory of this breakthrough nutraceutical ingredient at continualg.com.

Media Contact:
Rajan Shah
832-953-2791
[email protected]

SOURCE Continual-G