It is not certain whether it is safe to take during pregnancy and breastfeeding
The Role of Mast Cells in Pediatric Gastrointestinal Disease. Annals of Gastroenterology, vol
It can also create excessive foam and bubbles that trap peptide molecules and make dissolution uneven
While some studies have shown that inhaled glutathione can trigger asthma attacks in people suffering from asthma, there is not currently enough evidence to show that this applies to orally ingested glutathione
Lewerenz J, Ates G, Methner A, Conrad M, Maher P (2018) Oxytosis/ferroptosis(re-) emerging roles for oxidative stress-dependent non-apoptotic cell death in diseases of the central nervous system
With the majority of oral supplements, you're lucky if your body absorbs as little as 16% of what you're taking