Why must the Bowmed Ibisqus Limited amoxicillin 1 g powder for solution for injection product not be mixed with an aminoglycoside in the same syringe, intravenous fluid container or giving set?

When prescribed concomitantly, the Bowmed Ibisqus Limited amoxicillin 1 g powder for solution for injection product should not be mixed with an aminoglycoside in the same syringe, intravenous fluid container or giving set because the aminoglycoside loses activity under these conditions.