Drugs of Abuse – Stimulants, Depressants, Narcotics1. DefinitionsStimulants: Speed up the CNS (alertness/energy).Depressants: Slow down brain activity (calming/sedative).Narcotics/Opioids: Powerful pain relievers that can cause euphoria and dependence.2. Short-/Long-Term EffectsStimulants: ↑Heart rate, insomnia, anxiety → long-term: dependence, heart issues, psychosis.Depressants: Drowsiness, poor coordination → long-term: memory issues, addiction, overdose risk esp. with alcohol.Narcotics: Pain relief, euphoria → long-term: tolerance, addiction, respiratory depression, overdose.3. ExamplesStimulants: Caffeine, nicotine, amphetamines, c∅caine, meth.Depressants: Alcohol, benzodiazepines (diazepam), barbiturates.Narcotics: Morphine, codeine, heroin, fèntanyl, oxycodone.4. Note on “Pictures”: Hindi ako makakapaglagay ng aktuwal na larawan dito, pero maaari mong hanapin ang DOH/WHO infographics para sa malinaw at ligtas na visual references.