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Related Concept Videos

Pharmacokinetics: Drug–Drug Interactions01:25

Pharmacokinetics: Drug–Drug Interactions

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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...
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Drug-Receptor Interactions01:29

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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....
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Pharmacokinetics: Drug–Food and Drug–Viral Interactions01:26

Pharmacokinetics: Drug–Food and Drug–Viral Interactions

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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...
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Factors Affecting Protein-Drug Binding: Drug Interactions01:23

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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...
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Drug-Receptor Interaction: Antagonist01:28

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An antagonist is a drug that binds strongly to a receptor without activating it. An antagonist prevents other molecules, such as neurotransmitters or hormones, from binding to the receptor and triggering a cellular response. Such interaction effectively hinders the normal physiological processes mediated by the receptor, resulting in various pharmacological effects depending on the specific receptor targeted.
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Drug-Receptor Interaction: Agonist01:25

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Agonists are drugs that interact with specific receptors in the body to produce a biological response. When an agonist binds to a receptor, it activates or enhances the receptor's function, leading to physiological effects. The interaction between agonist drugs and receptors is crucial for their therapeutic action in various medical treatments.
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
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Important drug-micronutrient interactions: A selection for clinical practice.

Uwe Gröber1, Joachim Schmidt1, Klaus Kisters1,2

  • 1Academy of Micronutrient Medicine, Essen, Germany.

Critical Reviews in Food Science and Nutrition
|December 25, 2018
PubMed
Summary
This summary is machine-generated.

Drug-micronutrient interactions are often overlooked but impact patient health and medication efficacy. Healthcare professionals, especially pharmacists, must recognize these interactions to ensure optimal patient outcomes and drug effectiveness.

Keywords:
MetforminMicronutrientcoenzyme Q10druginteractionsmagnesiumproton pump inhibitorsseleniumstatinsthiazide diureticsvitamin B12vitamin D

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Area of Science:

  • Pharmacology
  • Clinical Pharmacy
  • Nutritional Science

Background:

  • Drug-micronutrient interactions have historically received limited attention in medical and pharmaceutical fields.
  • The increasing use of pharmaceuticals necessitates a greater focus on their interactions with micronutrients.
  • These interactions can significantly affect patient health and drug efficacy, depending on treatment duration and micronutrient status.

Purpose of the Study:

  • To raise awareness among physicians and pharmacists regarding drug-micronutrient interactions.
  • To highlight how commonly prescribed drugs can lead to micronutrient deficiencies.
  • To emphasize the critical role of pharmacists in managing these interactions.

Main Methods:

  • Review of existing literature on drug-micronutrient interactions.
  • Identification of widely prescribed drugs known to precipitate micronutrient deficiencies.
  • Discussion of the implications for patient health and drug action.

Main Results:

  • Selected examples of common drugs that can cause micronutrient deficiencies are presented.
  • The impact of these interactions on patient health and therapeutic outcomes is discussed.
  • The review underscores the importance of considering micronutrient status in pharmacotherapy.

Conclusions:

  • Physicians and pharmacists need to increase their attention to drug-micronutrient interactions.
  • Pharmacists are uniquely positioned to identify and manage these interactions due to their expertise.
  • Proactive management of these interactions is crucial for patient safety and effective treatment.