Simultaneously, the water insoluble/poorly water soluble drug precipitates in {TAIL ~ the form} of {HEAD ~ very small particles}  
Simultaneously , the water insoluble / poorly water soluble drug precipitates in { TAIL ~ the form } of { HEAD ~ very small particles }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH