“…The brain is more sensitive to increased levels of free copper [ 1 , 14 , 111 ]. Moreover, several studies, including some long-term investigations, indicate that treatment with penicillamine, trientine, or tetrathiomolybdate may be accompanied by serious adverse effects [ 4 , 31 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 ], some of which are irreversible and fatal [ 106 , 115 , 122 ]. These drugs are also expensive for patients and health services [ 123 , 124 ].…”