Opioid analgesics constitute a potent class of pharmacological agents primarily employed in the management of moderate to severe pain. Their therapeutic efficacy stems from their high affinity for opioid receptors distributed throughout the central nervous system (CNS) and the gastrointestinal (GI) tract. Upon binding, these drugs modulate the perception and response to pain, often providing…
Nootropics, frequently referred to as “smart drugs” or cognitive enhancers, constitute a diverse category of substances that are reputed to improve various aspects of mental functioning. These substances are primarily used to enhance executive functions such as reasoning, problem-solving, and planning, as well as to improve memory, learning ability, motivation, creativity, and even mood in…
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Central Nervous System Stimulants Central Nervous System (CNS) Stimulants comprise a diverse and pharmacologically significant class of psychoactive substances that exert excitatory effects on the brain and spinal cord. These agents function primarily by enhancing the synaptic activity of various excitatory neurotransmitters—most notably dopamine, norepinephrine, and serotonin—resulting in a heightened state of mental alertness, elevated…
Drugs Used in Alzheimer’s Disease: Alzheimer’s disease (AD) is a chronic, progressive neurodegenerative condition that primarily impairs memory, cognitive function, and the ability to perform daily activities. As the most common cause of dementia among older adults, Alzheimer’s accounts for approximately 60% to 80% of all dementia cases globally. First described by Alois Alzheimer in…
Parkinson`s disease, or paralysis agitans, is characterized by a resting tremor (involuntary trembling when a limb is in rest), rigidity (inability to initiate movements), and bradykinesia (slowness of movements). The disease results from the degeneration of dopaminergic neurons that arise in the substantial nigra and project to other structures in the basal ganglia. (Or) Parkinson’s…
Hallucinogens, also known as psychedelics, are a class of drugs that alter perception, mood, and cognitive processes, often leading to profound changes in consciousness and sensory experiences. These substances can induce hallucinations, distortions of time and space, and altered states of consciousness. Hallucinogens are typically divided into two categories: classic hallucinogens, such as LSD (Lysergic…
Antimanics, also known as mood stabilizers, are a class of medications primarily used to treat bipolar disorder, a mental health condition characterized by episodes of mania or hypomania alternating with episodes of depression. These medications help stabilize mood fluctuations and prevent or reduce the severity of manic or depressive episodes. Classification of Antimanics Antimanics can…
Anti-anxiety agents, also known as anxiolytics or tranquilizers, are medications used to treat anxiety disorders and related conditions by reducing feelings of anxiety, tension, and nervousness. They can provide symptomatic relief for acute episodes of anxiety or be used on a more long-term basis to manage chronic anxiety symptoms. Classification of Anti Anxiety Agents Anti-anxiety…
Antidepressants are a class of medications primarily used to treat depression and other mood disorders. They work by modulating the levels of neurotransmitters in the brain, particularly serotonin, norepinephrine, and dopamine, which are believed to play a role in regulating mood, emotions, and stress responses. Classification of Antidepressants Antidepressants are categorized into several main classes…
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