Photo of a young woman with her head in her hands© who are trying to quit taking heroin might have pain in muscles and bones, get chills, and throw up.

Heroin gives you a feeling of well-being and happiness. It also makes you feel like the world has slowed down. People on heroin think slowly and might move slowly.

Heroin makes people feel sleepy, like they're in a dream.

Heroin makes the pupils (the black circle in the center of each eye) get very small.

People who inject (shoot up) heroin will have marks on the skin where the needle went in.

Heroin is very addictive because it is usually injected or smoked, which sends it to the brain very quickly. People who get addicted to heroin need to take more and more of it to get the same high.

People who are trying to quit taking heroin might:

  • have pain in muscles and bones
  • get chills
  • throw up
  • be unable to sleep
  • feel nervous

They will feel a very strong need to take the drug.