Pharmaceutical assessment of gynaecological powders with the addition of hydrophilising substances containing lactic acid complexed with chitosan

Research on gynaecological preparations followed that of optimising their pharmaceutical properties, which is beneficial for gynaecological powders. Gels obtained from powders containing lactic acid complexed with chitosan revealed a stoichiometric ratio 1:1, 2;1, 3:1, 4:1 and 8:1. Their pH ranged from 3.92 to 4.44 for 1:1 gels and from 2.36 to 2.84 for the 8:1 ratio. The addition of 5% polyethylene glycol-400 increases the pH from 4.52 to 4.92 for 1:1 gels and from 2.54 to 3.41 for the 8:1 ratio. A modification of the composition of the tested powders containing 5% polyethylene glycol-400 increased the range of the dynamic viscosity of formulations suitably from 78 to 520 mPa.s for 1:1 gels and from 39 to 423 mPa.s for the 8:1 ratio. Measurements performed in a biopharmaceutical model revealed that the gels obtained from powders containing lactic acid complexed with chitosan are able to move from 25 to 28 cm.