Saturday, 16 June 2012

Psychostimulants Drugs | Definition, Mechanism of Action, Classification, Effects


CNS Stimulants Types and Definitions
Psychomotor stimulants - Amphetamines, Methylxantines, how they work, pharmacological effects, adverse effects, therapeutic uses
Convulsant & Respiratory Stimulants - how they work, agent/drugs
Psychotomimetic drugs - General, LSD, PCP, MDMA

Central Nervous System Stimulants
CNS stimulants can be categorised in 2 distinct categories, which are:
1. Psychomotor stimulants:
            these agents cause excitement & euphoria, relieve fatigue and increase motor activity
            - convulsants & respiratory stimulants (analeptics)
            - psychomotor stimulants
2. Psychotomimetic drugs (hallucinogens):
            produce profound changes in though patterns and mood
As a group, CNS stimulants have a few clinical uses, but they are important as drugs of abuse.

Definitions
Psychostimulant - drugs which produce a transient effect in psychomotor activity
Analeptics - drugs which acts as a restorative
Anorexiants - drugs which are anorexigenic
Psychotomimetic - drugs which produce manifestations resembling those of psychosis eg. visual hallucinations, distortion of perceptions and schizophrenic-like behaviour

Convulsants & Respiratory Stimulants
Doxapram, Strychnine, Bicuculline, Picrotoxin, Pentylenetetrazol

How/Where do they work
Little effect on mental function
Act mainly on the brain stem and spinal cord
Produce - exaggerated reflex excitability
Increase in activity of the respiratory & vasomotor centres
Higher dose - would result in convulsions

Related Searches:
Hallucinogens List of Examples | Long term effects
Caffeine | How it works, Pharmacological effects
Amphetamine Psychosis, Anxiety, Brain damage, long term effects
Amphetamine Drugs | Uses, Psychosis, Adverse Effects
Psychomotor Stimulants List, Wiki, Effects, Examples
Analeptics Drugs | Definition, Classification, Side effects
Psychostimulants Drugs | Definition, Mechanism of action
Psychotomimetic Agents
ADHD Attention Deficit-Hyperactivity Disorder Medication
CNS Central Nervous System Stimulants

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