Oral glutathione is not bioavailable. IV glutathione will deliver glutathione into the bloodstream, but the molecule is too large to be absorbed into the cells according to Dr. Herbert T. Nagasawa. Our ability to produce it declines as we age especially after the age of 40.
9 Ph.D.’s under Herbert T. Nagasawa Ph.D. at the University of Minnesota and the VA Medical Center in Minneapolis worked to find a method to increase glutathione levels more efficiently than n-acetylcysteine, the most prevalent glutathione precursor at the time. Through their efforts, they discovered Riboceine and validated its efficacy with 37 research studies with additional studies still being conducted.