Often it happens by accident. You’re cleaning up the trail of debris left by your teenaged son or daughter and baggies or plastic-wrapped packages of pills fall out of coats, jackets, jeans, purses, etc. Maybe you’re dusting their bedroom, putting away fresh laundry, or rearranging photos or other items in the room. What you discover turns your stomach to lead. Those brightly colored pills look vaguely familiar. With trembling hands, you carry the pills to your medicine cabinet and compare them with what’s there. They may be your prescription medications.