Glutathione is a tri-peptide formed from Glutamic acid, Cysteine and Glycine and generally produced in your body.

Glutathione with powerful anti-oxidant properties can help against free radicals. It can help immune system, support the body's detoxification processes and skin health.

Yeast. Kohjin Glutathione is made from Torula Yeast.
It means our product is natural.
Torula Yeast Candida utilis is considered GRAS by the FDA. In Germany it was approved as a food in 1920.

In the range of 100 to 150 mg per day.

Japan.

Yes, it is. In order to assure the safety of our product, our factory is subject to Japanese GMP (Good Manufacturing Practice), and our Glutathione is a non-GMO product with GRAS, Kosher and Halal certifications.
For over 40 years, Kohjin has provided quality and safe Glutathione to our customers all over the world.