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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...

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Updated: Jun 29, 2026

Therapeutic Massage for Psychological Well-being in Geriatric Oncology
03:59

Therapeutic Massage for Psychological Well-being in Geriatric Oncology

Published on: May 22, 2026

Drug therapy in elderly.

S Sandhiya1, C Adithan

  • 1Department of Pharmacology, JIPMER, Puducherry 605 006, India.

The Journal of the Association of Physicians of India
|October 14, 2008
PubMed
Summary
This summary is machine-generated.

As populations age, physiological changes increase adverse drug reactions (ADRs) in elderly patients. Understanding these changes and implementing therapeutic guidelines is crucial for safe and effective medication management in older adults.

Related Experiment Videos

Last Updated: Jun 29, 2026

Therapeutic Massage for Psychological Well-being in Geriatric Oncology
03:59

Therapeutic Massage for Psychological Well-being in Geriatric Oncology

Published on: May 22, 2026

Area of Science:

  • Gerontology
  • Pharmacology
  • Public Health

Background:

  • Population aging presents significant challenges in developed and developing countries.
  • Aging is linked to physiological changes and diseases (e.g., diabetes, hypertension) that affect drug responses.
  • Elderly individuals exhibit increased sensitivity to common medications like NSAIDs, benzodiazepines, and opioids.

Purpose of the Study:

  • To highlight the impact of aging on drug response and the prevalence of adverse drug reactions (ADRs).
  • To emphasize the necessity for healthcare providers to understand age-related physiological and pharmacological alterations.
  • To advocate for improved medication management strategies, including patient education and therapeutic guidelines, for the elderly population.

Main Methods:

  • Literature review on age-related physiological and pharmacological changes.
  • Analysis of the impact of these changes on drug efficacy and safety in the elderly.
  • Examination of healthcare expenditure related to ADRs in older adults.

Main Results:

  • Aging alters drug response, leading to increased susceptibility to adverse drug reactions (ADRs).
  • ADRs in the elderly contribute significantly to hospitalization and healthcare costs (estimated 40% in developed countries).
  • Lack of awareness regarding age-related changes can result in irrational prescribing.

Conclusions:

  • Physicians must be aware of age-related physiological and pharmacological changes to optimize drug therapy in the elderly.
  • Minimizing ADRs and maximizing therapeutic benefits requires informed prescribing practices.
  • Patient and caregiver education on proper medication use is essential for adherence and improved quality of life.