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  1. Drug addiction (substance use disorder) - Symptoms and causes

    Jun 20, 2025 · Drug addiction, also called substance use disorder, is a disease that affects a person's brain and behavior and leads to an inability to control the use of a legal or illegal drug …

  2. Naloxone (injection route) - Side effects & dosage - Mayo Clinic

    This medicine should be given immediately upon when a suspected or known overdose of an opioid has occurred. This will help prevent serious breathing problems and severe sleepiness …

  3. Drug addiction (substance use disorder) - Mayo Clinic

    Jun 20, 2025 · Although there's no cure for drug addiction, treatment options can help you overcome an addiction and stay drug-free. Your treatment depends on the drug used and any …

  4. Mayo Clinic Minute: 3 things to know when using Narcan during …

    Mar 29, 2023 · According to the Centers for Disease Control and Prevention, opioids are now the main driver of drug overdose deaths in the U.S. Dr. Holly Geyer, a Mayo Clinic addiction …

  5. Prescription drug abuse - Symptoms and causes - Mayo Clinic

    Oct 25, 2022 · Prescription drug abuse, also called prescription drug misuse, includes everything from taking a friend's prescription painkiller for your backache to snorting or injecting ground …

  6. Kratom: Unsafe and ineffective - Mayo Clinic

    Jun 18, 2024 · The U.S. Food and Drug Administration (FDA) has warned people not to use kratom because of possible harm it can cause. The U.S. Drug Enforcement Administration …

  7. Fentanyl (nasal route) - Side effects & dosage - Mayo Clinic

    Nov 1, 2025 · Using too much nasal fentanyl, or taking too much of another opioid while using nasal fentanyl, may cause an overdose. If this occurs, get emergency help right away.

  8. Serotonin syndrome - Symptoms & causes - Mayo Clinic

    Sep 12, 2024 · Learn how certain drug interactions or an increase in the dose of certain drugs can cause serotonin levels to rise to potentially dangerous levels.

  9. Drug allergy - Symptoms and causes - Mayo Clinic

    Nov 9, 2024 · A drug allergy happens when the immune system mistakenly identifies a medicine as a harmful substance, such as a virus or bacterium. Once the immune system detects a …

  10. How opioid use disorder occurs - Mayo Clinic

    Jul 20, 2024 · Rapidly delivering all the medicine to your body can cause an accidental overdose. Taking more than your prescribed dose of opioid medicine, or taking a dose more often than …