For comparison, glutathione injections typically cost less than IV therapy because they use smaller doses and require less time and equipment
Lack of Safety Data for Different Administration Routes FDA regulations require independent toxicological assessments for different administration routes, including topical, injectable, and oral administration
The effectiveness of glutathione in this capacity highlights its importance in promoting overall health and preventing diseases related to toxin buildup

A review of effects on plasma glutathione and lipid peroxides | PubMed [16] Muscle-derived ROS and thiol regulation in muscle fatigue | PubMed [17] Increase of glutathione, testosterone and antioxidant effects of Jurenia dolomiaea on CCl4 induced testicular toxicity in rat | PubMed [18] Effect of Glutathione Depletion on Leydig Cell Steroidogenesis in Young and Old Brown Norway Rats | PubMed [19] Glycine Increases Insulin Sensitivity and Glutathione Biosynthesis and Protects against Oxidative Stress in a Model of Sucrose-Induced Insulin Resistance | PubMed [20] Mitochondrial Glutathione: Regulation and Functions | PubMed [21] Glutathione Improves the Antioxidant Activity of Vitamin C in Human Lens and Retinal Epithelial Cells: Implications for Vitreous Substitutes | PubMed [22] Increased oxidative stress and antioxidant expression in mouse keratinocytes following exposure to paraquat | PubMed [23] Glutathione Peroxidase-1 in Health and Disease: From Molecular Mechanisms to Therapeutic Opportunities | PubMed [24] Glutathione: a key player in autoimmunity | PubMed [25] Effect of Glutathione Infusion on Leg Arterial Circulation, Cutaneous Microcirculation, and Pain-Free Walking Distance in Patients With Peripheral Obstructive Arterial Disease: A Randomized, Double-Blind, Placebo-Controlled Trial | PubMed [26] Inhibiting the system xC-/glutathione axis selectively targets cancers with mutant-p53 accumulation | PubMed [27] Setria Glutathione: A Detailed Guide | Prelab Pro [28] Effects of Oral Glutathione Supplementation on Systemic Oxidative Stress Biomarkers in Human Volunteers | PubMed [29] Glutathione

Used as per the indications described above
A study by Xiao et al (2013) clearly associated people aged between 40-85 years old following long-term diets high in animal proteins (a rich source of methionine) with a higher risk of hyperhomocysteinemia, the reverse being true for diets that include a high consumption of plant foods (Xiao et al, 2013)