l-glutathione supplement absorption Augmented Glutathione from Oral Mucosa and its Effect on Skin Pigmentation: A Clinical Review Liposomal Glutathione Pure Reduced L-Glutathione
Description
Based on this, anecdotal sources report a dose of 10-20mcg/kg, which would be equal to 1-2mg for a 200lb test subject

Mice were anesthetized with 2% isoflurane mixed with 0.5 L/min 100% O 2 and placed them on the heating pad in a supine position

1 H NMR (400 MHz, D 2 O, ppm): = 4.62 (dd, J = 7.7, 5.1 Hz, 1H), 3.94 (s, 2H), 3.80 (t, J = 6.3 Hz, 1H), 3.463.38 (m, 1H), 3.223.12 (m, 1H), 2.512.41 (m, 2H), 2.36 (s, 3H), 2.192.08 (m, 2H)

10.1016/j.bbrc.2019.11.187 223 WangK.ZhangZ.TsaiH.-I.LiuY.GaoJ.WangM.et al (2021a)

Not authorised for human consumption or therapeutic use

Though i n vitro experiments allow for easier control of mechanical and chemical stimulants, researchers still attempt to incorporate animal models to ensure that all aspects of the in vivo system are taken into account (146)