| 摘要 |
<p>A W/O/W composite emulsion which comprises an aqueous phase containing a hydrophilic emulsifying agent and dispersed therein a W/O emulsion comprising water, an oily ingredient, and an oleophilic emulsifying agent in a weight ratio within that range in FIG. 1 which is surrounded by the thick lines. It has sufficient stability, and a large amount of a drug can be kept being encapsulated in the inner aqueous phase thereof. It has hence become possible to incorporate a drug having an unpleasant flavour, an unstable drug, etc. into a low-viscosity liquid; this incorporation has conventionally been difficult. The emulsion therefore is utilizable as liquid preparations including internal ones, injections, etc.</p> |
