Signs and Symptoms of Marijuana

Street Names:Weed, Pot, Grass, Ganja, Joint, Blunt, Mary Jane

Method of Use: Smoked (pipe, joint-cigarette size, blunt-cigar size), Ingested (mixed with food)

Inhaling a substance through nose or mouth (sometimes using a substance soaked rag, breathing fumes out of a bag or balloon containing the preferred substance, or inhaling directly from the can)

Symptoms/Effects of Use

  • Euphoria (elated sense of well-being)
  • Distorted perceptions
  • Red/blood-shot eyes
  • Disruption of coordination/balance
  • Slowed reaction time
  • Lack of motivation
  • Memory impairment
  • Difficulty thinking and solving problems
  • Anxiety, fear, distrust, paranoia
  • Cancer of the lungs
  • Brain damage
  • Frequent acute chest illnesses (asthma, emphysema)
  • Greater risk for lung infections (Bronchitis, Pneumonia, common cold)
  • Psychosis
  • Chronic use: increased rates of anxiety, depression, and schizophrenia

What to Look For

  • Red/blood-shot eyes
  • White bumps on the tongue (only after recent/immediate use)
  • Smell of marijuana and/or strong odors of
  • cologne/perfume to mask marijuana smell
  • Excessive use of eye drops
  • Having the “munchies”
  • Money spent/unaccounted for
  • Difficulty holding a conversation
  • Inappropriate laughter
  • Evidence of drug paraphernalia

Withdrawals Symptoms

  • Irritability
  • Sleeping difficulties
  • Cravings
  • Anxiety
  • Depressed mood

Note: Each person may experience different symptoms/effects. This list is not inclusive. For more information, visit