A meta-analysis of studies using NAC to increase athletic performance found that there were more side effects (none severe) at 20g/day.[ref] High doses of NAC are used in hospitals by IV for reversing acetaminophen toxicity
For instance, if you need 2ml, pull the plunger to the 2ml mark
Mol Cell Biol 23(23):87868794 Kwak M-K, Cho J-M, Huang B, Shin S, Kensler TW (2007) Role of increased expression of the proteasome in the protective effects of sulforaphane against hydrogen peroxide-mediated cytotoxicity in murine neuroblastoma cells
When used to treat wounds, researchers observed that hair follicles surrounding treated areas appeared notably enlarged, suggesting GHK-Cu plays a role in preventing follicular miniaturization and potentially increasing follicle size
Rely on a product that is produced in Germany under strict hygiene guidelines and bottled according to DIN EN ISO 9001, and regularly undergoes laboratory testing