Photo of a pharmacist handing a prescription to a young womanPhoto by ©istock.com/WavebreakmediaPeople who get addicted to pain medicines need to take more of the drug to get the same high. Some people might visit different doctors for prescriptions and fill them at different pharmacies. They also might steal these pills from medicine cabinets of people they know.

Misusing pain medicine can cause:

  • throwing up
  • constipation (trouble "pooping")
  • pupils to get very small (pupils are the black circle in the center of each eye)

When people smoke, snort, or inject pain medicines, they get a stronger high than swallowing the pills. This stronger high is more dangerous and can cause problems breathing.

NEXT: Effects of Pain Medicine Misuse on Brains and Bodies