Artemisinin and its derivatives are nowadays among the most effective antimalarials. However, the relapse rate with artemisinin and related compounds is relatively high. In order to overcome this, some experimental formulations of prolonged release tablet of artesunat are tested. The chosen formulation met the following demands: after an effective loading concentration of the active compound, there is a steady release of maintenance dose during 8 hours.
Artesunate ; Pharmaceutical Preparations ; tablets

Study on some methods used to quantify berberine chloride showed that the UV measuring and volumetric titration methods did not express only amount of berberine chloride itself. It is necessary to apply high- performance liquid chromatography (HPLC) to achieve the optimal conditions for better splitting, higher accuracy…in order to apply more widely in testing products commonly in market with many components combined to berberine chloride. To find out optimal methods, which are suitable with condition of present some pharmaceutical units, it is necessary to experiment continuously methods such as UV measuring and volumetric titration,… using HPLC method to compare.
Berberine ; Tablets

Preliminary application of fluorescerin spectrum to analyze riboflavine in Aphavita filmed tablet. Aphavita was a combination of vitamins B1, B6, B5, PP and adjuvants. Basing on the fluorescein property of ribofleavine, which depends on pH of tested media, the product was quantified. The qualitification showed the line criterion, the repeatation and the accuracy
Riboflavin ; Pharmaceutical Preparations ; Tablets