scholarly journals METHODS FOR IMPROVING ALPHA-MANGOSTIN SOLUBILITY: A REVIEW

Author(s):  
NURUL FAJERIYATI ◽  
MUCHTARIDI MUCHTARIDI ◽  
IYAN SOPYAN

Solubility is an important parameter to achieve for the bioavailability of a drug to reach the therapeutic windows. Garcinia mangostana Linn is a plant with great potency for the development of natural medicine. Alpha-mangostin is one of the secondary metabolites of G. mangostana and has been reported to have several pharmacological activities. The Biopharmaceutics Classification System (BCS) is a system that classifies drugs based on their solubility and permeability. Due to its low solubility but high permeation, alpha-mangostin is categorized into class II of the Biopharmaceutics Classification System. Therefore, the determination of dosage forms and modification of solubility enhancers is limited due to its physical properties, as mentioned above. This disadvantage requires new methods to improve its solubility to administer alpha-mangostin, especially for oral administration. Here, we discuss the development of the methods to increase alpha-mangostin solubility to be applied to formulate a dosage form to reach a useful plasma level for medication.

Author(s):  
Eldya Nurismi ◽  
Henni Rosaini ◽  
dan Maria Dona Octavia

Solubility is an important parameter for the bioavailability of drugs that are difficult to dissolve. Natural compounds that are included in class II in the Biopharmaceutics Classification System (BCS) are Apigenin, Quercetin, Genistein, Curcumin, and Piperin. These drugs have low solubility in water and high permeability so that they affect the dissolution rate and as well as their bioavailability, to increase the solubility they are made with multicomponent crystals. This review aims to provide information on the method of making crystal multicomponent to increase the solubility and dissolution rate of BCS II drugs. Several methods that can be used in multicomponent are solvent drop grinding, solvent evaporation, assisted grinding, and slurry. The results showed that multicomponent crystals using several methods could increase the solubility and dissolution rates.


2016 ◽  
Vol 60 (4) ◽  
pp. 63-69
Author(s):  
I. Šoltýsová ◽  
D. Toropilová ◽  
T. de Vringer

Abstract Active ingredients in pharmaceuticals differ by their physico-chemical properties and their bioavailability therefore varies. The most frequently used and most convenient way of administration of medicines is oral, however many drugs are little soluble in water. Thus they are not sufficiently effective and suitable for such administration. For this reason a system of lipid based formulations (LBF) was developed. Series of formulations were prepared and tested in water and biorelevant media. On the basis of selection criteria, there were selected formulations with the best emulsification potential, good dispersion in the environment and physical stability. Samples of structurally different drugs included in the Class II of the Biopharmaceutics classification system (BCS) were obtained, namely Griseofulvin, Glibenclamide, Carbamazepine, Haloperidol, Itraconazol, Triclosan, Praziquantel and Rifaximin, for testing of maximal saturation in formulations prepared from commercially available excipients. Methods were developed for preparation of formulations, observation of emulsification and its description, determination of maximum solubility of drug samples in the respective formulation and subsequent analysis. Saturation of formulations with drugs showed that formulations 80 % XA and 20 % Xh, 35 % XF and 65 % Xh were best able to dissolve the drugs which supports the hypothesis that it is desirable to identify limited series of formulations which could be generally applied for this purpose.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 363
Author(s):  
Claudia Miranda ◽  
Alexis Aceituno ◽  
Mirna Fernández ◽  
Gustavo Mendes ◽  
Yanina Rodríguez ◽  
...  

The biopharmaceutical classification system (BCS) is a very important tool to replace the traditional in vivo bioequivalence studies with in vitro dissolution assays during multisource product development. This paper compares the most recent harmonized guideline for biowaivers based on the biopharmaceutics classification system and the BCS regulatory guidelines in Latin America and analyzes the current BCS regulatory requirements and the perspective of the harmonization in the region to develop safe and effective multisource products. Differences and similarities between the official and publicly available BCS guidelines of several Latin American regulatory authorities and the new ICH harmonization guideline were identified and compared. Only Chile, Brazil, Colombia, and Argentina have a more comprehensive BCS guideline, which includes solubility, permeability, and dissolution requirements. Although their regulatory documents have many similarities with the ICH guidelines, there are still major differences in their interpretation and application. This situation is an obstacle to the successful development of safe and effective multisource products in the Latin American region, not only to improve their access to patients at a reasonable cost, but also to develop BCS biowaiver studies that fulfill the quality standards of regulators in developed and emerging markets.


2018 ◽  
Vol 3 (3) ◽  
pp. 8-20
Author(s):  
Jimi Patel ◽  
Priti Mehta ◽  
Vaishali Kothari

To waive a complete and systemic Bioequivalence (BE) study, Biowaiver or Request for a Biowaiver is a fast track approach to boost the drug development process. Over the past three-four years the Biowaiver market shows greater number of Biowaiver submissions and the wider use of In-vitro permeability study. Biowaiver is a beneficial approach for getting approval of Abbreviated New Drug Application (ANDA) while, BCS based Biowaiver is the novel approach to gain approval for New Drug Application (NDA) as well as ANDA. A Biopharmaceutics Classification System (BCS) based Biowaiver is an exemption from conducting human bioequivalence studies when active ingredient and dosage form meet criteria of solubility, permeability and dissolution. The Paper covers different kind of Biowaiver approaches and the criteria for the applicability of BCS based Biowaivers in the different geographic scopes with regard to global development strategy. There is a comparison of global guidelines on provisions availability for different types of Biowaiver approaches as well as for requirements of Biowaiver based on BCS. From comparison of different global guidelines it is reviewed that most of the guidance resembles to the USFDA, EU and WHO guidelines because most of the regulatory authorities are following the BCS based Biowaiver concept as one of the three main guidance documents (USFDA, EMA, WHO) or a combination of specific requirements.


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