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Related Concept Videos

Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems01:22

Bioavailability Enhancement: Determination and Conceptual Approaches in Overcoming Bioavailability Problems

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Bioavailability is a critical pharmacological concept that measures the extent and rate at which an active drug ingredient or therapeutic moiety enters the systemic circulation, remaining unchanged. It's a pivotal factor in determining a drug's efficacy and safety.The Biopharmaceutics Classification System (BCS) plays an essential role in drug development by categorizing drugs into four classes based on their solubility and permeability. This classification aids in understanding drug absorption...
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Bioavailability Enhancement: Drug Solubility Enhancement01:16

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Bioavailability is a critical factor in determining a drug's effectiveness. It refers to the proportion of a drug that enters the circulation when introduced into the body and is, as a result, able to have an active effect. Enhancing bioavailability is essential for drugs with poor solubility, as it can significantly impact their therapeutic efficacy. Various methods are employed to increase the solubility of drugs, thereby enhancing their bioavailability.Micronization and nanonization are...
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After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
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When a drug is taken orally, it undergoes a journey starting from the gastrointestinal (GI) tract, passing through the portal vein, reaching the liver, and finally entering the systemic circulation. This process involves the absorption of the drug across the GI tract. The liver is the primary site for metabolizing the drug, with some metabolism also occurring in the gut wall. This journey significantly reduces the quantity of the drug that reaches the systemic circulation, a phenomenon known as...
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Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
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Bioavailability refers to the proportion of an administered drug that reaches the systemic circulation in its active, unaltered form. It is a crucial pharmacokinetic parameter that determines the effectiveness of a drug in achieving its intended therapeutic outcomes. The route of administration significantly influences bioavailability, with intravenous administration achieving 100% bioavailability as the drug directly enters the bloodstream. In contrast, oral administration often results in...
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Oral bioavailability: issues and solutions via nanoformulations.

Kamla Pathak1, Smita Raghuvanshi

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Nanoformulations enhance oral drug bioavailability by overcoming pharmacokinetic challenges. This review explores various nanoformulations, their applications, and safety considerations for improved drug delivery.

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Area of Science:

  • Pharmaceutical Sciences
  • Nanotechnology
  • Drug Delivery

Background:

  • Oral drug delivery is optimal but often hindered by poor pharmacokinetics.
  • Traditional methods focus on molecular optimization, evolving to micro- and nano-sized formulations.
  • Nanoformulations offer a promising solution to enhance drug bioavailability.

Purpose of the Study:

  • To review challenges in oral drug bioavailability and explore nanoformulation strategies.
  • To compile literature on various nanoformulations and their impact on pharmacokinetics.
  • To discuss chemotherapeutic applications, patents, and toxicological aspects of nanomedicines.

Main Methods:

  • Comprehensive literature review of nanoformulations for drug delivery.
  • Analysis of different nanoformulation types including nanocrystals, nanoemulsions, nanoparticles, and others.
  • Compilation of data on chemotherapeutic applications, patents, and safety assessments.

Main Results:

  • Nanoformulations significantly improve drug pharmacokinetics and bioavailability.
  • Various nanoformulations like nanocrystals, nanoemulsions, and polymeric nanoparticles show great potential.
  • Nanomedicines offer improved therapeutic outcomes but require careful toxicological evaluation.

Conclusions:

  • Nanotechnology facilitates clinical translation of drugs with bioavailability issues.
  • Nanoparticle-based drug delivery systems are expanding the market for effective therapeutics.
  • Further research is needed to develop safer nanomedicines with minimal adverse effects.