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Dosage Regimen: Fixed Dose01:01

Dosage Regimen: Fixed Dose

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Fixed-dose regimens are a common approach to administer drugs to achieve and maintain desired levels of the drug in the body. In this dosing strategy, a specific amount of medication is given at regular intervals, often multiple times a day, to ensure a consistent drug concentration in the bloodstream.
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Assessing Body Temperature - Oral01:14

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Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
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Step 4:
Instruct the patient to open their mouth and place...
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Factors Influencing Drug Absorption: Pharmaceutical Parameters01:28

Factors Influencing Drug Absorption: Pharmaceutical Parameters

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Solid dosage forms such as tablets and capsules undergo rigorous manufacturing processes to ensure stability and effectiveness. Their dissolution and absorption properties are influenced significantly by the choice of excipients (inactive ingredients that serve various roles in the formulation), and the methodology applied during production. The manufacturing parameters, such as compression force and granulation techniques, significantly affect dissolution rates. Elevated compression forces...
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Two-Compartment Open Model: IV Bolus Administration01:18

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The two-compartment model for intravenous (IV) bolus administration illustrates drug distribution in the body, subdividing it into central and peripheral compartments. This model operates on the concept of two-compartment kinetics. The drug's plasma concentration shows a bi-exponential decline following IV bolus administration, signaling the presence of two disposition processes: distribution and elimination.
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One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution01:09

One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution

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The one-compartment open model is a simplified approach used in pharmacokinetics to understand the distribution and elimination of a drug administered through an intravenous bolus. This model assumes rapid drug dispersal throughout the body and elimination using a first-order process. Key pharmacokinetic parameters, such as the elimination rate constant (k), half-life (t1/2), and the apparent volume of distribution (Vd), can be estimated from this model. The elimination rate is calculated...
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Drug Dosage Regimen: Overview01:15

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A drug dosage regimen describes the specific instructions and schedule for administering a drug to a patient. It considers factors such as drug dosage, frequency, route of administration, and duration of treatment. Designing an appropriate dosage regimen for a patient aims to achieve a target drug concentration at the site of action.
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Temperature Excursion Management: A Tier-Based Approach for Commercial Oral Solid Dosage Forms.

Shalini Raj Unnikandam Veettil1, Gianna Respicio1, DeeDee Zhang1

  • 1Gilead Sciences Inc., Foster City, California, 94404, USA.

The AAPS Journal
|October 1, 2024
PubMed
Summary
This summary is machine-generated.

Temperature excursions can impact drug quality. This study presents a tiered approach to assess temperature excursion impacts on small molecule drugs, ensuring product safety and usability.

Keywords:
arrhenius equationshelf life limitsolid oral dosagestabilitytemperature excursion management

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Area of Science:

  • Pharmaceutical Science
  • Supply Chain Management
  • Chemical Kinetics

Background:

  • Temperature excursions during storage, transport, and handling can compromise pharmaceutical product quality.
  • Regulatory agencies require pharmaceutical companies to have robust procedures for managing temperature excursions and assessing their impact.
  • Expediting the review of temperature excursion events is crucial in complex pharmaceutical supply chains.

Purpose of the Study:

  • To present a tier-based approach for analyzing the impact of temperature excursions on room-temperature-stored small molecule drug products.
  • To establish criteria for product dispositioning following temperature excursions based on excursion parameters.
  • To provide a framework for efficient and scientifically sound management of temperature excursion events.

Main Methods:

  • A three-tiered system for impact assessment based on excursion temperature and duration.
  • Tier 1: Product disposition without further assessment if within allowable temperature and duration ranges.
  • Tier 2: Lot-specific release data analysis if temperature is within range but duration exceeds it.
  • Tier 3: Arrhenius extrapolation for impact assessment when excursion temperature exceeds allowable limits.

Main Results:

  • Tier 1 allows immediate product dispositioning for events within defined product-specific allowable ranges.
  • Tier 2 utilizes existing lot data for impact assessment when excursion duration is the limiting factor.
  • Tier 3 employs predictive modeling (Arrhenius extrapolation) for excursions exceeding temperature thresholds.

Conclusions:

  • The presented tier-based approach provides a structured and efficient method for managing temperature excursions of small molecule drug products.
  • This approach facilitates timely decision-making regarding product usability, balancing product quality with supply chain efficiency.
  • Implementation of this strategy helps ensure pharmaceutical product integrity throughout the supply chain.