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Related Concept Videos

Drug toxicity: Drug–Drug Interaction01:30

Drug toxicity: Drug–Drug Interaction

Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
Pharmacokinetics: Drug–Drug Interactions01:25

Pharmacokinetics: Drug–Drug Interactions

Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
Pharmacokinetics: Drug–Food and Drug–Viral Interactions01:26

Pharmacokinetics: Drug–Food and Drug–Viral Interactions

A drug interaction occurs when the concurrent use of another drug, food, or an external substance alters the pharmacological activity of a drug. This interaction can modify the action of the original drug, affecting its effectiveness and safety.Drug–food interactions are significant as they impact drug absorption, metabolism, and excretion. For example, grapefruit juice is a well-known disruptor of drug metabolism. It inhibits the cytochrome P450 3A4 enzyme, crucial for the metabolism of many...
Factors Affecting Protein-Drug Binding: Drug Interactions01:23

Factors Affecting Protein-Drug Binding: Drug Interactions

Drug interactions are a critical aspect of pharmacology and can occur when two or more drugs compete for the same binding site. This competition can result in one drug displacing another, altering the effect of the displaced drug. Drug interactions are complex processes that rely heavily on how much of the displacer drug is present and how strongly it can bind to the same sites as the displaced drug.
Displacement interactions can have varying outcomes, ranging from toxicity to virtually...
Drug-Receptor Interactions01:29

Drug-Receptor Interactions

Drug-receptor interaction describes the binding of receptors by drugs, but not all drug-receptor interactions result in activation and tissue response. For instance, the binding of agonists activates the receptor to generate a cellular reaction, while antagonists bind to receptors without causing their activation.
Several parameters, such as the drug's affinity for its receptor and its efficacy, which is its ability to activate the receptor, determine the drug's effect on the tissue.
Combined Effects of Drugs: Antagonism01:30

Combined Effects of Drugs: Antagonism

The combined effects of drugs can result in various interactions, of which an important type is antagonism. Antagonism is a mechanism where one drug inhibits or counteracts the effects of another drug. Antagonism can occur through various means, including receptor binding, allosteric modulation, functional interaction, chemical reactions, and pharmacokinetic processes.
The most common type is receptor antagonism, where one drug acts as an antagonist to block the effects of another drug by...

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Related Experiment Video

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Diagonal Method to Measure Synergy Among Any Number of Drugs
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Published on: June 21, 2018

Drug-nutrient interactions.

Lingtak-Neander Chan1

  • 1School of Pharmacy, and Graduate Program in Nutritional Sciences, University of Washington, Seattle, WA 98195-7630, USA. neander@u.washington.edu

JPEN. Journal of Parenteral and Enteral Nutrition
|May 16, 2013
PubMed
Summary

Drug-nutrient interactions can cause serious health issues, but can be prevented with careful patient assessment and management strategies. Further research is needed to understand mechanisms and personalize treatments for better patient outcomes.

Keywords:
drug-nutrient interactionsenteral nutritionintestinal transportersnutrition support

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Area of Science:

  • Pharmacology
  • Clinical Nutrition
  • Drug Metabolism

Background:

  • Drug-nutrient interactions (DNIs) are complex relationships between medications and nutrients.
  • These interactions can lead to severe health consequences and negatively impact patient outcomes.
  • Current management relies heavily on anecdotal evidence, highlighting a gap in scientific understanding.

Purpose of the Study:

  • To review the classification and management of drug-nutrient interactions.
  • To emphasize the need for increased basic and clinical research in this area.
  • To advocate for a personalized medicine approach to prevent and manage DNIs.

Main Methods:

  • Categorization of DNIs based on physiological events and interaction mechanisms.
  • Review of existing literature and clinical management strategies.
  • Identification of research gaps and future research directions.

Main Results:

  • Drug-nutrient interactions are multifactorial and can be categorized into four main types.
  • Effective management strategies exist but require thorough patient assessment.
  • The scientific understanding of DNI mechanisms remains limited.

Conclusions:

  • Adverse events from DNIs can be prevented with careful management.
  • Increased research is crucial to understand DNI mechanisms and improve clinical practice.
  • Personalized medicine approaches, considering factors like genetics and ethnicity, are essential for optimal DNI management.