A composition and method for ameliorating drug-seeking behavior in drug addicts who have stopped using the addicted-to drug and who have reestablished non-addict physiological chemical balance.

A composition and method for ameliorating drug-seeking behavior in drug addicts who have stopped using the addicted-to drug and who have reestablished non-addict physiological chemical balance.

A composition and method for ameliorating drug-seeking behavior in drug addicts who have stopped using the addicted-to drug and who have reestablished non-addict physiological chemical balance.

A radiopaque particulate material one or more of SiO.sub.2, TiO.sub.2, La.sub.2O.sub.3, Na.sub.2O and MgO and useful for embolization which optionally includes therapeutic components that are released in vivo.

A radiopaque particulate material one or more of SiO.sub.2, TiO.sub.2, La.sub.2O.sub.3, Na.sub.2O and MgO and useful for embolization which optionally includes therapeutic components that are released in vivo.

A radiopaque particulate material one or more of SiO.sub.2, TiO.sub.2, La.sub.2O.sub.3, Na.sub.2O and MgO and useful for embolization which optionally includes therapeutic components that are released in vivo.

Disclosed are methods of making stable nanoparticle suspensions wherein one or more nanoporous or mesoporous materials are used to absorb and remove one or more non-tolerated surfactants from the nanoparticle suspensions. Also provided are methods of making stable nanoparticle suspension formulations wherein one or more macromolecular or colloidal stabilizers or tolerated surfactants are simultaneously added to further stabilize the nanoparticle suspension formulation. Thus to prevent a collapse of the suspension, one exchanges or replaces the surfactants that are not tolerated, by one or more tolerated surfactants or by macro-molecular/colloidal stabilizers.

Disclosed are methods of making stable nanoparticle suspensions wherein one or more nanoporous or mesoporous materials are used to absorb and remove one or more non-tolerated surfactants from the nanoparticle suspensions. Also provided are methods of making stable nanoparticle suspension formulations wherein one or more macromolecular or colloidal stabilizers or tolerated surfactants are simultaneously added to further stabilize the nanoparticle suspension formulation. Thus to prevent a collapse of the suspension, one exchanges or replaces the surfactants that are not tolerated, by one or more tolerated surfactants or by macro-molecular/colloidal stabilizers.

Disclosed is a method for suppressing adhesion of air harmful substances, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the following component (A) and component (B), and the ratio by mass of the content of the component (A) to the content of the component (B) in the external preparation [(A)/(B)] is 0.30 or more and 5.0 or less. Component (A): a metal oxide having an average primary particle diameter d.sub.A of 800 nm or less. Component (B): non-disintegrable particles having an average particle diameter D.sub.B of 1 μm or more and 10 μm or less.

Disclosed is a method for suppressing adhesion of air harmful substances, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the following component (A) and component (B), and the ratio by mass of the content of the component (A) to the content of the component (B) in the external preparation [(A)/(B)] is 0.30 or more and 5.0 or less. Component (A): a metal oxide having an average primary particle diameter d.sub.A of 800 nm or less. Component (B): non-disintegrable particles having an average particle diameter D.sub.B of 1 μm or more and 10 μm or less.