Do any of these scenarios sound familiar?
How would you react?

Tanya was getting ready to go out for a night of party-hopping. She had scored two Vicodin and was planning on taking them to get her night started off right, as soon as she finished emailing her friend. A message popped up: “Roommate out cold. Not breathing well. Vicodin + shots. 911??” Tanya wasn’t sure what to suggest, but thought that maybe her own evening plans might need some adjusting.

It was 3 a.m. and Justin still couldn’t fall asleep. He had been studying for his economics final for days, and knew he had to do really well to make up for his poor midterm. So he had taken some of his roommate’s Adderall to help him study. That was great at 10 p.m., but now he needed to fall asleep so that he would be well-rested enough to do his best. That was not going to happen because Justin had severe jitters from the Adderall. He hoped he’d have enough energy in the morning to get his mind in gear.

One of your sorority sisters has been trimming down recently. Yesterday, you went into her purse to borrow her lip gloss and found a mostly empty bottle of diet pills. She laughed and said everybody takes them, and you know she’s right. After all, diets are so hard to follow, and she bought the pills at the vitamin store. But you’re a little concerned. You’ve heard they can be addictive. You’re not sure if it’s no big deal, or if you should be worried.