Related Experiment Video
Updated: Jun 9, 2026
05:44
Formation of Dispersible Taohong Siwu Tablets
Published on: February 3, 2023
[Comparative study on dissolution of Xianlinggubao capsules prepared by different processes]
Wen Chen1, Shouying Du, Qing Wu
1Department of Chinese Pharmacy, Beijing University of Traditional Chinese Medicine, Beijing 100102, China.
Summary
Dissolution differences were found in Xianlinggubao capsules prepared using different methods. New formulations show higher active component dissolution rates compared to traditional ones, impacting therapeutic efficacy.
Area of Science:
- Pharmacology
- Pharmaceutical Sciences
- Drug Delivery
Background:
- Xianlinggubao capsules are a traditional Chinese medicine with multiple active components.
- Understanding the dissolution profiles of these components is crucial for efficacy.
- Variations in manufacturing processes can affect drug release.
Purpose of the Study:
- To characterize the in vitro dissolution of seven key active components in Xianlinggubao capsules.
- To compare the dissolution performance of Xianlinggubao capsules manufactured via different processes.
- To evaluate the impact of preparation methods on drug release.
Main Methods:
- Dissolution testing using the small cup method with phosphate buffer (pH 6.8).
- High-performance liquid chromatography (HPLC) for quantifying seven active components: icariin, epimedin C, asperosaponin VI, psoralen, isopsoralen, salvianolic acid B, and tanshinone IIA.
- Similarity factor (f2) analysis to compare dissolution curve profiles.
Main Results:
- Significant differences in dissolution rates were observed among the seven active components.
- Dissolution curves of active components from capsules prepared by different processes showed dissimilarity (f2 < 50).
- New Xianlinggubao capsules demonstrated higher cumulative dissolution percentages for active components.
Conclusions:
- Preparation process significantly influences the dissolution characteristics of active components in Xianlinggubao capsules.
- The new formulation of Xianlinggubao capsules exhibits improved dissolution profiles.
- Optimized manufacturing processes are essential for enhancing the bioavailability and therapeutic effectiveness of Xianlinggubao capsules.
Related Concept Videos
01:17In Vitro Drug Dissolution: Alternative Methods
Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...
01:18Formulation and Manufacturing Process: Physical Attributes of Generic Tablets and Capsules
Bioequivalence in generic drugs, such as tablets and capsules, refers to their pharmaceutical equivalence to the brand-name counterparts. However, for therapeutic equivalence, manufacturers must also consider physical attributes like size, shape, and weight (FDA Guidance for Industry, December 2003). Discrepancies in these aspects could impact patient compliance and cause medication errors. For instance, swallowing difficulties, often experienced with larger tablets or capsules, can lead to...
01:13In Vitro Drug Dissolution: Compendial Testing Models I
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
01:28Factors Influencing Drug Absorption: Pharmaceutical Parameters
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...
01:09In Vitro Drug Dissolution: Compendial Testing Models II
Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients, maintaining...
01:14Drug Dissolution: Requirements and Profile Comparison
The acceptance criteria for dissolution profile data are anchored in Q values, representing the percentage of drug dissolved within a specified period. This assessment unfolds in three stages:First Stage: The test passes if all six drug dosage units are equal to or greater than Q plus 5%; otherwise, the sample proceeds to the second stage.Second Stage: The average of twelve units must be equal to or greater than Q, with no unit falling below Q - 15% to pass; if not, it progresses to the final...