A new silymarin preparation based on solid dispersion technique.
Silymarin is a hepatoprotective agent that is poorly soluble in water. The present study describes a new preparation of solid dispersions in the form of "dripping pills" designed to enhance solubility. Dripping pills of silymarin were prepared at a 1:4 ratio by the traditional fusion method with the use of a mixture of silymarin and polyethylene glycol 6000 (PEG 6000). The prepared dripping pills were spherical and 3 to 4 mm in diameter, with an average weight of 30 mg per pill and with each pill containing 5 mg of silymarin. The dissolution rates of silymarin in dripping pill and of 3 other silymarin preparations, including Yiganling Film-Coating Tablet, Yiganling Sugar-Coating Tablet, and Legalon Capsule, were determined in pH 1.2 medium. The dissolution rate (T50) of the silymarin dripping pill was found to be significantly higher (by a factor of 7.5-11) than those of the other 3 preparations.
Qiu
Ming-feng
MF
School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China.
Jia
Wei
W
Li
Shao-shun
SS
Xu
Zhao-hui
ZH
Sun
Xia
X
Wang
Xiao-rong
XR
Zhang
Yong-yu
YY
Xie
Guo-xiang
GX
D011092:Polyethylene Glycols / Q000737:chemistry; D020011:Protective Agents / Q000737:chemistry*; D012838:Silymarin / Q000737:chemistry*; D012995:Solubility; D013678:Technology, Pharmaceutical
D020011:Protective Agents; D012838:Silymarin; D011092:Polyethylene Glycols