Lipospheres containing a hydrophilic drug, [D-Trp-6]LHRH, were prepare
d using warm w/o/w microemulsion. Incorporation of the hydrophilic dru
g, [D-Trp-6]LHRH, was considerable (about 90%). The in vitro release o
f the peptide from the lipospheres was observed for 8 h.