Detailed Instructions: In this task, you need to Translate Czech text to English.
Q: Rychlerozpustný farmaceutický prípravek se silnouinhibicní aktivitou vuci aldózové reduktáze, obsahující mikronizovaný (R)-2-(4-brom-2-fluorbenzyl)-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazin-4-spiro-3´-pyrrolidin-1,2´,3,5´-tetron, mající velikost cástic menší než 20 .mi.m, a který má rozpustnost 50 %hmotn. nebo více úcinné složky po 15 minutách od pocátku rozpouštecího testu. Predkládaný farmaceutický prípravek obsahuje prípadne stabilizátor a mávýrazne zlepšenou stabilitu.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
In the present invention, there is disclosed a quick-dissolving pharmaceutical preparation exhibiting strong inhibition activity relative to aldose reductase, containing micronized (R)-2-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine-4-spiro-3?-pyrrolidine-1,2?,3,5?-tetrone, having particle size less than 20 microns and having solubility 509 percent by weight or more of the active component after 15 minutes starting from the onset of the dissolving test. The pharmaceutical preparation according to the present invention optionally contains a stabilizer and exhibits significantly improved stability.