Ge-132 Shown to be Safe
During 28 days and six months, test animals received 1mg/kg/day of Ge-132. No particular toxic symptoms, no behavior trouble, except a small decrease of body weight in male animals, at the end of the six-month experiment, were observed. Germanium urinary excretion was constant and linked to the received dose. Six months later, no preferential accumulation in organs was observed.
Source: Journal de Toxicologie Clinique et Experimentale, 1991 Dec, 11(7-8):421-36
GERMANIUM A NEW APPROACH TO IMMUNITY by Betty Kamen, Ph.D.:14page