Benzos (Xanax, Valium, Klonopin) are popular, but addictive. Not saying your kid is the type, but those kind of drugs would be easy to sell on the street and I would be concerned that if his friends or classmates caught wind that he was taking a medication like that, he might find people asking or harassing him to sell them. Of course, you know your kid and his friends, but I would be really wary. It happens a lot. Do you know what kind of medication his doctor is suggesting?