I AM TAKING CONCERTA BUT MY FAMILY DOESNT KNOW. THEY DONT APPROVE OF MEDICINES TO HELP MENTALLY SO I HAVE KEPT IF FROM THEM. i WAS GIVEN A PERSCRIPTION BY MY DOCTOR FOR IT BUT MY MOTHER KEEPS STAYING SHE'S GOING TO DRUG TEST ME IM AFRAID CAUSE I KNOW SHE WONT UNDERSTAND WHY IM TAKING THE MEDICINE ... SO I WOULD LIKE TO KNOW HOW LONG IT STAYS IN MY SYSTEM SO I CAN STOP TAKING IT FOR THE FEW DAYS I MIGHT GET GRUG TESTED