nac and glutathione covid N-Acetyl Cysteine can improve immune health Glutathione biosynthetic scheme. N-acetyl-L-cysteine (NAC)

However, without context, these particular conditions may have improved regardless of using BPC 157

In contrast, there is some evidence of an enhancement of the maximum absorption via intrinsic factor, by up to a factor of 2, when the vitamin B12 is accompanied by food, but this is not consistently observed and probably only applies when the food quantity and vitamin B12 dose are sufficient to slow the passage of the vitamin B12 through the small intestine enough (about three hours or more) to allow each intrinsic factor receptor to absorb two molecules of vitamin B12 from the oral dose rather than one

PMID 11031273

To find units to draw on an insulin syringe: desired dose in mcg / concentration in mcg per ml x 100 = units