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Unnecessary drug therapy. This could occur when the patient has been placed on too many medications for their condition and the drug is simply not needed. [7] Wrong drug. This could occur when a patient is given medication that does not treat the patient's condition. Ex. A heart medication to treat an infection. [7] Dose too low.
Psychoactive drugs operate by temporarily affecting a person's neurochemistry, which in turn causes changes in a person's mood, cognition, perception and behavior. There are many ways in which psychoactive drugs can affect the brain. Each drug has a specific action on one or more neurotransmitter or neuroreceptor in the brain.
[7] Psychoactive drugs are substances that affect the function of the central nervous system, altering perception, mood or consciousness. [8] These drugs are divided into different groups such as: stimulants, depressants, antidepressants, anxiolytics, antipsychotics, and hallucinogens.
The specific interaction between drugs and their receptors is referred to as "drug action", and the widespread changes in physiological or psychological function is referred to as "drug effect". [2] These drugs may originate from natural sources such as plants and animals, or from artificial sources such as chemical synthesis in the laboratory.
A stimulant is a drug that stimulates the central nervous system, increasing arousal, attention and endurance. Stimulants are used in psychiatry to treat attention deficit-hyperactivity disorder. Because the medications can be addictive, patients with a history of drug abuse are typically monitored closely or treated with a non-stimulant.
The drugs that enter an individual tend to stimulate certain receptors, ion channels, act on enzymes or transport proteins. As a result, they cause the human body to react in a specific way. Based on drug action on receptors, there are 2 different types of drugs: Agonists – they stimulate and activate the receptors
This category reflects the organization of Anatomical Therapeutic Chemical Classification System code N. Generally, drugs outlined within the ATC code N should be included in this category. Please see WP:PHARM:CAT for more information.
Any chemical substance with biological activity may be considered a drug. This list categorises drugs alphabetically and also by other categorisations. This multi-page article lists pharmaceutical drugs alphabetically by name. Many drugs have more than one name and, therefore, the same drug may be listed more than once.