drug therapies with reaction rates in excess of 1 per 100,000 exposed individuals include phenobarbital ( 20 per 100,000 ) , nitrofurantoin ( 7 per 100,000 ) , sulfamethoxazole and trimethoprim , and ampicillin ( both 3 per 100,000 ) , and amoxicillin ( 2 per 100,000 ) .
C0002680
ampicillin
C0002645
amoxicillin