is glutathione and vitamin c same & C: Your Skin's Favourite Combo PROS & CONS - PAULA'S

This subcutaneous delivery method provides optimal bioavailability and consistent drug release

Impact of smoking status and concomitant medications on the effect of high-dose N-acetylcysteine on chronic obstructive pulmonary disease exacerbations: A post-hoc analysis of the PANTHEON study

U., Dimberg, A., Mellberg, S., Lukinius, A

Thats because if you use Phase I supportive supplements as a standalone, they will begin to convert the toxins into intermediate byproducts, but many of these byproducts are more harmful than the original toxins and may not clear from the body if you dont have enough Phase II-supporting amino acids

doi: 10.1136/jnnp.68.6.750 237