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Related Concept Videos

Dosage Regimen: Individualization01:24

Dosage Regimen: Individualization

Individualization in dosing regimens is the customization of medication doses for individual patients. Its necessity arises from the goal of maximizing therapeutic benefits while minimizing risks. This approach is pivotal because human responses to drugs can vary widely; what is effective for one person may be inadequate or excessive for another. Interpatient (intersubject) variability refers to differences in drug responses between individuals, while intrapatient (intrasubject) variability...
Dosage Regimens: Designs and Approaches01:28

Dosage Regimens: Designs and Approaches

Designing a dosage regimen, which refers to the manner of drug administration, is a complex process involving the selection of drug dose, route, and frequency. This process is underpinned by pharmacokinetic parameters derived from tests and population averages. These parameters are then tailored to patient-specific variables such as diagnosis, demographics, and allergy status. Once therapy commences, therapeutic response monitoring is critical and achieved through clinical and physical...
Dosage Regimen: Fixed Dose01:01

Dosage Regimen: Fixed Dose

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.
Fixed-dose regimens can be used for various routes of administration, including intravenous (IV) injections and oral medications. For IV administration, a predetermined amount of the drug is...
Determination of Multiple Dosing Parameters: Loading and Maintenance Doses01:25

Determination of Multiple Dosing Parameters: Loading and Maintenance Doses

A loading dose is an essential pharmacological strategy to rapidly achieve the target plasma drug concentration necessary for an immediate therapeutic effect. This approach is especially critical for drugs characterized by slow absorption or extended half-lives, where delaying therapeutic plasma levels could compromise treatment outcomes. By administering a loading dose, clinicians ensure a prompt onset of drug action, even for agents with complex pharmacokinetic profiles.Achieving steady-state...
Drug Dosage Regimen: Overview01:15

Drug Dosage Regimen: Overview

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.
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...
Dosage Regimen Designs: Nomograms and Tabulations01:23

Dosage Regimen Designs: Nomograms and Tabulations

Nomograms and tabulations are vital tools used by clinicians to design accurate and individualized dosage regimens. These instruments provide a straightforward method for adjusting dosages based on individual patient characteristics, including age, weight, and physiological condition. The foundation of a drug's nomogram is population pharmacokinetic data collected and analyzed using specific models. This data simplifies complex equations, presenting them diagrammatically or tabularly for easy...

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Related Experiment Video

Updated: Jul 5, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
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Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

Effective doses, guidelines & regulations.

Michael D Burch1

  • 1Australian Water Quality Centre, PMB 3, Salisbury, Adelaide, SA 5108, Australia. mike.burch@sawater.com.au

Advances in Experimental Medicine and Biology
|May 9, 2008
PubMed
Summary

International guidelines for cyanotoxins in drinking water, primarily microcystins, are established but provisional. Further research is needed for comprehensive risk assessment and regulation development, especially for toxin mixtures and analytical methods.

Area of Science:

  • Environmental Science
  • Toxicology
  • Public Health

Background:

  • International guidelines for cyanotoxins in drinking water exist, with a focus on microcystins due to their potential for human harm.
  • The World Health Organization (WHO) established a provisional guideline for microcystin-LR in 1998, acknowledging limited toxicology data and ongoing research.
  • Many countries have adopted or adapted WHO guidelines, while others, like Brazil, have more comprehensive legislation including other cyanotoxins.

Purpose of the Study:

  • To review existing international guidelines for cyanotoxins in drinking and recreational water.
  • To identify research gaps and limitations hindering the development of robust regulations, particularly for the US.
  • To suggest short-term health advisories while long-term regulatory frameworks are developed.

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Disposable Dosators Intended for Dry Powder Delivery to Mice
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Disposable Dosators Intended for Dry Powder Delivery to Mice

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Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays
06:15

Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays

Published on: January 30, 2019

Related Experiment Videos

Last Updated: Jul 5, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
06:51

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

Disposable Dosators Intended for Dry Powder Delivery to Mice
04:59

Disposable Dosators Intended for Dry Powder Delivery to Mice

Published on: August 18, 2023

Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays
06:15

Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays

Published on: January 30, 2019

Main Methods:

  • Review of international regulations and guidelines for cyanotoxins.
  • Analysis of limitations in toxicological data, analytical methods, and risk assessment for cyanotoxins.
  • Comparison of national approaches to cyanotoxin guideline development.

Main Results:

  • Microcystins are the primary focus for regulation, but cylindrospermopsin and Anatoxin-a are also priority compounds for the US.
  • Insufficient information exists for guidelines on agricultural use, fisheries, and ecosystem protection.
  • Key limitations for US regulation include handling multiple toxin congeners, lack of robust analytical methods, and absence of certified standards.

Conclusions:

  • Further research, including whole-life animal studies, is crucial for developing comprehensive cyanotoxin regulations.
  • Development of rapid, economical, and robust analytical methods is a priority for effective monitoring and compliance.
  • Adopting existing WHO or national guidelines as short-term health advisories may be appropriate for the US while developing specific regulations.