PHLEBOPROTECTORS BASED ON FLAVONOIDS: DOSAGE FORMS, BIOPHARMACEUTICAL CHARACTERISTICS, TECHNOLOGICAL FEATURES

Micronized purified flavonoid fraction (MPFF) is the original phlebotropic drug. Its marketed form (Detralex^®) consists of 90% diosmin and 10% of other flavonoids. Calculated as hesperidin, it is the most widely used drug today. Diosmin and hesperidin, which are parts of the majority of venoactive drugs, are sparingly water-soluble compounds, and this feature can effect on their clinical efficacy. One of the ways to increase the solubility of these compounds leading to an increase in bioavailability, is the micronization of the active ingredients.

The aim of the investigation is a comparative determination of the dynamics and dissolution efficiency of the drugs containing bioflavonoid fractions in the dissolution test, as well as the analysis of the micronization degree and its impact on technology and biopharmaceutical parameters.

Materials and methods. A biopharmaceutical release profile was determined using HPLC. Disintegration, characteristics of the shape and size of the tablets’ particles were determined according to the methods of the State Pharmacopoeia of the XIV-th edition.

Results. The objects created with the use of diosmin and hesperidin, have been considered in detail. The role of technological solutions in relation to the corresponding dosage forms is notified. Detailed biopharmaceutical characteristics have been established with a choice of HPLC-based release control methodology. All the drugs in this group have a low water solubility leading to the maximum bioavailability for Detralex® which is about 1.26%; and no more than 0.2% for other analyzed models.

Conclusion. Detralex^® dominates among the analyzed objects (tablets) in terms of the release rate. With regard to the overall quantitative indicators of release, the actual numbers are quite low, which is associated with the poor water solubility of the active substances.

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