chromium + exercise group ( n = 7), in addition to the daily standard diet, animals in this group were given a single dose (8 g/kg/day) of chromium picolinate (Ocean brand chromium picolinate component) supplementation by gavage method for 8 weeks, and 20 min of daily treadmill exercise, five days a week for eight weeks
Safety of Glutathione in Pregnancy : Current research and recommendations
D.PapotiM.MarchiniJ
For readers who want primary sources, see a PubMed report on a combination study (PubMed report), a related review article (review in PMC), and a registered clinical trial listing (ClinicalTrials.gov trial)
Research found no evidence of tolerance development, receptor desensitization, or accumulating side effects over the study periods
10.4103/0976-7800.153615 30 DhimanK