Substance Effects - Eppp Knowledge

1. What acute effects on mood and cognition are most typical of opioid intoxication?

   Euphoria and analgesia; sedation; impaired attention/judgment. Opioids activate mu receptors, producing pain relief and relaxation but diminishing focus and decision-making abilities.

2. Which complementary agent is most associated with sedation and potential additive CNS depression with alcohol: St. John's wort or kava?

   Kava. Kava modulates GABA and has sedative properties that synergize with alcohol, unlike St. John's wort's serotonergic actions.

3. Which inhalant effect pattern best fits acute use: brief euphoria followed by CNS depression and impaired coordination?

   Inhalant intoxication (CNS depression with ataxia). Inhalants rapidly depress neural activity, initially stimulating reward pathways before causing motor incoordination.

4. Which drug is most associated with dissociation, depersonalization, and analgesia due to NMDA antagonism?

   PCP (and ketamine) dissociatives. NMDA antagonists like PCP induce detachment from self and pain insensitivity by disrupting glutamatergic signaling.

5. Which alcohol-related state most commonly produces disinhibition, slowed processing, and impaired memory encoding?

   Alcohol intoxication. Acute alcohol exposure disinhibits behavior via GABA enhancement and impairs cognition through NMDA antagonism.

6. What cognitive domain is most consistently impaired during acute cannabis intoxication?

   Attention and short-term/working memory. THC impairs prefrontal and hippocampal functions, selectively affecting concentration and immediate recall during intoxication.

7. Which complementary agent is most associated with increased energy/alertness and possible anxiety or insomnia at higher doses?

   Caffeine (and other stimulatory supplements, e.g., guarana). Caffeine blocks adenosine receptors, promoting wakefulness but overstimulating at high levels to induce restlessness.

8. Which complementary agent is most associated with antidepressant-like effects but risk of serotonin syndrome with SSRIs?

   St. John's wort. St. John's wort inhibits serotonin reuptake, mimicking SSRIs and risking excess when combined, unlike kava's effects.

9. Which substance class most directly increases dopamine via blocking reuptake and causes euphoria and increased energy?

   Cocaine (stimulant; dopamine reuptake inhibition). Cocaine enhances dopaminergic transmission by inhibiting reuptake, leading to heightened arousal and positive mood states.

10. What acute cognitive and mood effects most characterize amphetamine-type stimulants (e.g., methamphetamine)?

    Increased alertness/euphoria; decreased appetite; possible paranoia. Amphetamines boost monoamine levels, enhancing vigilance and reward while suppressing hunger, but may induce suspiciousness at higher doses.

11. Which is more consistent with opioid withdrawal: miosis or mydriasis?

    Mydriasis. Withdrawal triggers sympathetic overdrive, dilating pupils in contrast to intoxication's constrictive effect.

12. Which complementary agent is most associated with claims of memory enhancement but increased bleeding risk with anticoagulants?

    Ginkgo biloba. Ginkgo inhibits platelet activation, posing hemorrhage risks with blood thinners while purportedly aiding cerebral blood flow for cognition.

13. What mood and sleep changes are most characteristic of opioid withdrawal (vs intoxication)?

    Dysphoria, anxiety, insomnia, irritability (not euphoria/sedation). Opioid withdrawal involves rebound noradrenergic activity, causing emotional distress and arousal opposite to intoxication's calming effects.

14. What acute mood and social-cognitive effects most characterize MDMA (ecstasy) intoxication?

    Euphoria, empathy/connectedness, increased sociability. MDMA releases serotonin and dopamine, fostering emotional openness and interpersonal bonding during acute effects.

15. Which nicotine effect on cognition is most typical immediately after use in dependent individuals?

    Improved attention/alertness with reduced withdrawal-related dysphoria. Nicotine stimulates cholinergic receptors, counteracting deficiency states in addicts to enhance focus and stabilize mood.

16. Which hallucinogen class is most associated with visual hallucinations and altered time perception with intact orientation?

    Classic psychedelics (e.g., LSD, psilocybin). Psychedelics agonize serotonin 5-HT2A receptors, distorting perception while preserving reality testing unlike deliriants.

17. Which withdrawal syndrome is most associated with dysphoria, fatigue, and psychomotor slowing after heavy use?

    Stimulant withdrawal. Cessation of stimulants depletes dopamine, resulting in motivational deficits and reduced activity levels.

18. Which supplement is most associated with cognitive slowing and daytime sedation, especially when combined with other sedatives: valerian or ginkgo?

    Valerian. Valerian enhances GABA activity, promoting drowsiness that accumulates with other CNS depressants, contrasting ginkgo's profile.

19. Which is more consistent with stimulant intoxication: psychomotor agitation or psychomotor retardation?

    Psychomotor agitation. Stimulants increase sympathetic activation, promoting restlessness and hyperactivity rather than sedative-induced slowing.

20. Identify the agent that commonly causes rebound anxiety and insomnia when discontinued after chronic use: alcohol or cannabis?

    Alcohol. Chronic alcohol use downregulates GABA receptors, leading to excitatory rebound upon withdrawal unlike cannabis's milder effects.

21. Which intoxication pattern best differentiates stimulants from sedative-hypnotics regarding psychomotor activity?

    Stimulants increase; sedative-hypnotics decrease psychomotor activity. Stimulants elevate arousal through catecholamine release, contrasting with sedative-hypnotics' GABAergic suppression of motor function.

22. Which substance intoxication is most associated with perceptual distortions and anxiety/panic in some users?

    Cannabis intoxication. Cannabis activates CB1 receptors, altering sensory processing and potentially triggering fear responses in vulnerable individuals.

23. Which is more consistent with opioid intoxication: miosis or mydriasis?

    Miosis. Opioids constrict pupils via parasympathetic stimulation, distinguishing from sympathomimetic dilation in other states.

24. Which presentation is more consistent with benzodiazepine intoxication: pressured speech or slurred speech?

    Slurred speech. Benzodiazepines enhance GABA inhibition, slowing speech production as opposed to stimulants' acceleratory effects.

25. What cognitive effect is classically linked to benzodiazepines and other sedative-hypnotics during intoxication?

    Anterograde amnesia with impaired new learning. Sedative-hypnotics potentiate GABA, disrupting hippocampal function and preventing consolidation of new memories.

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