liposomal glutathione randomized trial increases glutathione levels A Targeted Metabolomic Assessment of Oral Bioavailability and Safety in Humans: A Crossover Clinical Glutathione: Master Antioxidant, Reducing Oxidative

Ethics declarations Conflict of Interest All authors have given lectures, received honoraria and research support and participated in conferences, advisory boards and clinical trials sponsored by many pharmaceutical companies

After incubation for 15 min at 30 C, 1,000 rpm using a 3 mm shaking diameter, cell debris was removed by centrifugation (4,400 g at 4 C for 30 min) and the supernatants were analysed by HPLCMS at two different dilutions (undiluted and four times diluted with 67% methanol, 0.2% hydrochloric acid in H 2 O)

Microencapsulation was achieved through emulsification, spray drying and nanoprecipitation

Needle or catheter placement: Confirm whether a needle or catheter was placed and that placement is included in the procedure work (not separately billable)