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Related Concept Videos

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention01:05

Bioavailability Enhancement: Drug Stability Enhancement and GI Retention

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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 Enhancement: Drug Permeability Enhancement01:27

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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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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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Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry01:20

Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

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Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
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Bioavailability: Influencing Factors01:22

Bioavailability: Influencing Factors

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Bioavailability refers to the extent and rate at which a drug reaches systemic circulation in its active form. Extent refers to the amount of the drug that makes it into circulation, while rate is the speed at which it enters circulation. It is influenced by several factors critical for optimizing drug formulations, dosing regimens, and therapeutic outcomes.Physicochemical properties of drugs and formulationsThe solubility, stability, and dissolution rate of a drug significantly impact its...
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Updated: Apr 6, 2026

Self-Nanoemulsification of Healthy Oils to Enhance the Solubility of Lipophilic Drugs
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Integrating Bioavailability Enhancers with Beta-Sitosterol for Optimized Therapeutic Index: A Mechanistic Insight.

Monika Sharma1, Jasmine Kaur2, Renu Saharan3

  • 1Bharat Institute of Pharmacy, Rurki, Pehladpur, Haryana, Kurukshetra - 136132, India.

Recent Advances in Drug Delivery and Formulation
|April 5, 2026
PubMed
Summary

Plant sterols like beta-sitosterol (BSS) show therapeutic promise but suffer poor bioavailability. Novel drug delivery systems and formulation techniques significantly enhance BSS absorption and clinical utility.

Keywords:
Beta-sitosteroldrug delivery systemslipid-based formulationsnanocarriersnovel delivery systemsphytosterolsplant sterol pharmacology.targeted drug delivery

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Area of Science:

  • Pharmacology and Drug Delivery
  • Natural Product Chemistry

Background:

  • Herbal molecules are increasingly favored over synthetic drugs due to lower toxicity and better patient compliance.
  • Beta-sitosterol (BSS), a plant-derived sterol, exhibits cholesterol-lowering, anti-inflammatory, and anticancer properties.
  • Limited water solubility, poor gastrointestinal absorption, and first-pass metabolism (FPM) hinder BSS oral bioavailability and clinical application.

Purpose of the Study:

  • To comprehensively review traditional and novel strategies for enhancing beta-sitosterol (BSS) bioavailability.
  • To assess the regulatory relevance of these strategies using the Biopharmaceutics Classification System (BCS) framework.
  • To highlight translational challenges and future prospects for BSS delivery.

Main Methods:

  • Review of emerging drug delivery systems (NDDS) including nanoparticles, liposomes, micelles, and nanostructured lipid carriers.
  • Analysis of formulation techniques such as solid dispersions, hydrotropy, self-emulsifying drug delivery systems, and complexation.
  • Inclusion of innovative technologies like 3D printing for controlled drug release.

Main Results:

  • NDDS and advanced formulation techniques effectively improve BSS solubility, stability, and systemic bioavailability.
  • These strategies address the limitations of BSS, potentially expanding its clinical use.
  • The Biopharmaceutics Classification System (BCS) framework aids in evaluating the regulatory aspects of BSS delivery systems.

Conclusions:

  • Emerging drug delivery systems and formulation strategies offer significant potential to overcome BSS bioavailability challenges.
  • Translational research is crucial to bridge the gap between laboratory findings and clinical application.
  • Future prospects include targeted delivery options and personalized medicine approaches for BSS therapy.