GlyNAC is generally considered highly safe and well-tolerated by the general population, with the most common side effects being mild and transient gastrointestinal disturbances such as nausea, upset stomach, dyspepsia, or diarrhea
Only five studies were gender matched [60, 73, 75, 83, 89], four did not provide the gender of cases or controls [50, 59, 71, 89] and nine provided the gender of cases but not controls [4648, 50, 70, 73, 79, 83, 91]
A product may contain a legitimate form of glutathione and still be poorly formulated, inadequately tested, improperly stored or underdosed
Some research suggests that NAC may increase glutathione more effectively than standard glutathione supplements
At-home programs may prescribe smaller doses (e.g., 100 mg ) injected subcutaneously (under the skin) on a more frequent schedule