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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...
442
Bioequivalence of Drugs: Drugs with Multiple Indications01:09

Bioequivalence of Drugs: Drugs with Multiple Indications

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The concept of therapeutic equivalence (TE) in drugs with multiple indications is complex. A generic drug may be therapeutically equivalent to a brand-name product for one specific indication, but this doesn't necessarily mean it's equivalent for all other indications. Evidence of TE in one patient group and bioequivalence shown in healthy volunteers can support—but not confirm—TE for other indications. However, definitive proof requires individual clinical studies for each...
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FDA Approved Drugs: Changes to Approved Drugs01:26

FDA Approved Drugs: Changes to Approved Drugs

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Post-approval, manufacturers may modify an approved new or generic drug product. Such modifications can encompass alterations in the Active Pharmaceutical Ingredient (API), manufacturing process, formulation, batch size, manufacturing site, and container closure system (FDA Guidance for Industry, April 2004). Often, a drug product may undergo multiple changes.These modifications require careful evaluation to determine their potential impact on the drug product's identity, strength, quality,...
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Factors Influencing Drug Absorption: Drug Dissolution01:27

Factors Influencing Drug Absorption: Drug Dissolution

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The pharmacokinetic journey of drugs from solid oral dosage forms into systemic circulation is multifaceted. It begins with disintegration, a prerequisite ensuring a solid dosage form's subdivision into minute particles. Dissolution occurs next as these granulated entities solubilize in gastrointestinal fluids. This solubilization is crucial for the succeeding stage, permeation, which describes the traversal of the drug across the intestinal membrane and its subsequent entry into the blood...
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Factors Affecting Protein-Drug Binding: Drug-Related Factors01:18

Factors Affecting Protein-Drug Binding: Drug-Related Factors

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Drug binding to proteins is a complex phenomenon influenced by various drug-related factors, each playing a significant role in the interaction between drugs and proteins within the body.
One crucial factor in drug-protein binding is the drug's lipophilicity or its affinity for fat. More lipophilic drugs tend to have higher binding extents. For example, highly lipophilic drugs like cloxacillin exhibit substantial protein binding, with as much as 95% of the drug binding to proteins. In...
485
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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Basophil Activation Test for Allergy Diagnosis
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Drug Allergy.

Divya Seth, Deepak Kamat

    Pediatric Annals
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    Summary
    This summary is machine-generated.

    Drug allergy involves immune responses to medications, causing reactions from mild rashes to severe conditions. Diagnosis is often clinical, but tests like skin biopsy may help, and avoiding the drug is key.

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    Area of Science:

    • Clinical Immunology
    • Dermatology
    • Pharmacology

    Background:

    • Drug allergy is a frequent clinical challenge.
    • It represents an immunological reaction to pharmaceutical agents.
    • Reactions range from cutaneous manifestations to severe systemic illness.

    Purpose of the Study:

    • To summarize the clinical presentation of drug allergies.
    • To outline diagnostic approaches for drug allergy.
    • To emphasize management strategies for patients with drug allergy.

    Main Methods:

    • Clinical review of drug allergy presentations.
    • Discussion of diagnostic investigations including IgE, patch testing, and biopsy.
    • Guidance on avoidance of causative agents.

    Main Results:

    • Drug allergy presents with a spectrum of clinical symptoms.
    • Diagnosis relies heavily on clinical assessment.
    • Specific tests may aid in diagnosis when needed.

    Conclusions:

    • Effective management of drug allergy involves accurate diagnosis and avoidance of the offending agent.
    • Understanding the range of reactions is crucial for patient care.
    • Prompt identification and management can prevent severe outcomes.