According to the study authors, the straightening of the recto-anal angle that occurs with squatting is the natural posture for defecation (Sikirov 1989
Material obtained outside controlled research supply chains is not characterized to the same standard, and identity, purity, and endotoxin status can vary substantially between sources

Patients should contact their GP or prescribing clinician if they experience: Severe or persistent cramps that do not respond to simple measures or significantly impact daily activities and sleep quality Frequent cramping occurring multiple times daily or nightly Associated symptoms such as muscle weakness, numbness, tingling, or changes in sensation, which may indicate neurological involvement Visible muscle changes including swelling, redness, tenderness, or asymmetry between legs Signs of dehydration such as dizziness, reduced urine output, dark urine, or confusion These features may indicate underlying conditions requiring investigation, such as significant electrolyte disturbances, peripheral neuropathy (particularly relevant in diabetes), peripheral arterial disease, or, rarely, more serious muscle disorders
Berken GH et al
Respiratory Health: Glutathione is essential for maintaining healthy lung function and protecting lung tissues from damage caused by pollution, smoke, or other harmful substances