The Physician's desk Reference (PDR), states that acteylcysteine (NAC, an ingredient in Max GXL) should be avoided in nursing mothers and should only be used in pregnancy on the advice of a physician. It should be used with caution in patients with chronic liver disease, as well as in pre-term newborns, and may be harmful if administered early in the treatment of critically ill patients.
The supplement may cause headaches and (rarely) kidney stones. NAC should be used with caution in those with a history ulcers. Additionally, NAC may interact with some medications including nitrates, and carbamazepine. No interactions with nutritional supplements, food or herbs have been reported.
Guba na gani ang kidney, pun an pa ug kidney stones
Those who do form renal stones, particularly cystine stones, should avoid NAC supplements. NAC and its sulfhydryl metabolites, like other sulfhydryl-containing substances, could produce a false-positive result in the nitroprusside test for ketone bodies used in diabetes. NAC should be used with caution in those with a history of peptic ulcer disease, since mucolytic agents may disrupt the gastric mucosal barrier."