A stent is provided which has a relatively less porous support structure that includes a first set of consolidated particles and at least one relatively more porous reservoir that includes a second set of consolidated particles that differ in composition from the first set of consolidated particles.第1の圧密化粒子の組を含む比較的多孔度の低い支持構造と、第1の圧密化粒子の組とは組成が異なる第2の圧密化粒子の組を含む少なくとも1つの比較的多孔度の高いリザーバ(120)とを有するステントを提供する。