The purpose of this work was to introduce a new concept of coated pellets containing chitosan microspheres loaded with didadosine for oral administration, aiming at reducing the frequency of administration and improving the bioavailability by a suitable release profile. Chitosan microspheres were produced under fluidized bed, followed by extrusion and spheronization to obtain pellets with a mea...

For patients with swallowing difficulties the capsule can be opened and the contents swallowed directly with half a glass of liquid or after mixing the contents in a slightly acidic fluid e.g. fruit juice, yoghurt or in non carbonated water. The dispersion should be taken immediately or within 30 minutes. Alternatively patients can suck the capsule and swallow the pellets with liquid. The pelle...

Enzalutamide (ENZ) is a BCS class II, fast crystallizing, hydrophobic compound that has solubility limited absorption in vivo. Ternary solid dispersion of was prepared with water-soluble polymers Soluplus (SOL) and Poloxamer P 188 (POL) by solvent evaporation spray drying technique. Initially, different ratios Soluplus: solvents were used to prepare dispersions evaluated for the dissolution enh...

Meloxicam is a non steroidal anti-inflammatory drug, used in the treatment of rheumatoid arthritis and oestoarthritis. It is practically insoluble in water leading to poor dissolution, variations in bioavailability and gastric irritation on oral administration. In order to modulate its gastric side effect and to increase aqueous solubility, physical mixture and solid dispersion of the drug were...

solid dispersions in water-soluble carriers have attracted considerable interest as a means of improving the dissolution rate, and hence possibly bioavailability, of a range of hydrophobic drugs. the poor solubility of carvedilol leads to poor dissolution and hence variation in bioavailability. the purpose of the present investigation was to increase the solubility and dissolution rate of carve...

the present investigation was focused to formulate semi-solid capsules (sscs) of hydrophobic drug telmisartan (tlms) by encapsulating semi-solid matrix of its solid dispersion (sd) in hpmc capsules. the combinational approach was used to reduce the lag time in drug release and improvise its dissolution. sds of tlms was prepared using hot fusion method by varying the combinations of pluronic-f68...

Introduction The mixing of carbon black or silica pellets and a matrix implies distinct phases e.g., (i) incorporation, (ii) distribution and (iii) dispersion [Nak81]. To disperse implies to reduce the pellet size (around the millimeter) down to the aggregate size (a few tens of nanometers). This size is necessary to ensure the reinforcement of the matrix (see for example [Ham00]). Dispersion a...

carbamazepine belongs to the class ii biopharmaceutical classification system (bcs) which is characterized by a high per-oral dose, a low aqueous solubility and a high membrane permeability. the bioavailability of such a drug is limited by the dissolution rate. in order to increase the drug dissolution, its solid dispersions were prepared by the cogrinding technique using an insoluble but highl...

the purpose of the present study was to investigate the effect of polyethylene glycol (peg) molecular weights (6000, 12000 and 20000) as solid dispersion (sd) carriers on the dissolution behavior of simvastatin. sds with various drug : carrier ratios were prepared by solvent method and evaluated for dissolution rate. differential scanning calorimetry (dsc), x-ray diffraction (xrd), infrared spe...