YOU SAID:
He beat you at your own medicine!
INTO JAPANESE
彼はあなた自身の薬であなたを打ち負かしました!
BACK INTO ENGLISH
He defeated you with your own medicine!
INTO JAPANESE
彼はあなた自身の薬であなたを打ち負かしました!
BACK INTO ENGLISH
He defeated you with your own medicine!
That didn't even make that much sense in English.