is nac the precursor to glutathione Brain Basics Ultra | Precursor, Optimize Neurological and Liver Health and Immune Support N-Acetylcysteine (NAC): Impacts on Human
Description
Research (Wash D C)

Combining with other peptides GHK-Cu often appears in protocols alongside BPC-157 , TB-500 , and other peptides

Post-Injury or Post-COVID Traumatic brain injury recovery and long-COVID cognitive symptoms (brain fog)

And I think it does raise a few important questions and hopefully some answers as well

Patients should be instructed to check the medication before each use for any signs of degradation or contamination