IV or Oral Glutathione Which Works Better? At LaserTreat, we get this question all the time! Here's the truth IV Glutathione delivers 90100% absorption, while oral supplements Glutathione Infusion Before and 3 Days After Primary Angioplasty Blunts Ongoing NOX2Mediated Inflammatory Response Journal of the American Heart Association Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Glutathione IV for Liver Detox: Support & Benefits AZ IV Medics