Abstract: The invention features methods for preventing platelet activation and aggregation and for treating individuals suffering from conditions or undergoing procedures that may result in unwanted platelet aggregation. The methods are based on the intravenous, subcutaneous, or transdermal administration of a platelet activation or aggregation inhibitor, e.g., xemilofiban, followed by oral administration of the same or a different platelet activation or aggregation inhibitor. The treatment may commence prior to a medical or surgical procedure or after the outbreak of an adverse medical condition, either of which results in the activation of platelets that may lead to thrombus formation, and may continue thereafter.

Abstract: The present invention pertains to antagonists of excitatory amino acid neurotransmitter receptor antagonists, their method of preparation as well as compositions containing them which have the general formula: ##STR1## wherein n and m independently are 0, 1, 2, or 3; R.sub.1 is selected from the group consisting of hydrogen and R.sub.2 ; R.sub.2 is selected from the group consisting of hydrogen, halogen, halomethyl, nitro, amino, alkoxy, hydroxyl, hydroxymethyl, C.sub.1 to C.sub.6 lower alkyl, C.sub.7 to C.sub.12 higher alkyl, aryl and aralkyl, wherein if R.sub.2 is hydrogen, R.sub.1 is not hydrogen; R.sub.3 is selected from the group consisting of hydrogen and C.sub.1 to C.sub.6 lower alkyl; the stereoisomers thereof in their resolved or racemic form, and pharmaceutically acceptable salts thereof.

Abstract: The invention pertains to a method and pharmaceutical compositions for treating, preventing or reducing neurodegeneration associated with chronic central nervous system or hypoxic, ischemic and hypoglycemic injury to the central nervous system and for the treatment of anxiety through the use of 2-amino-.omega.-phosphonoalkanoic acids having a cycloalkyl group bridging adjacent carbons on the alkyl chain, their pharmaceutically acceptable salts and derivatives as neuroprotectants and anxiolytics.

Abstract: A pharmaceutical composition comprises an anti-epileptic drug that does not inhibit, enhance or otherwise modify dextromethorphan binding to the central nervous system dextromethorphan receptor and an effective amount of dextromethorphan to potentiate the anticonvulsant activity of the drug. Other related compounds similar to dextromethorphan which inhibit or enhance dextromethorphan binding to the dextromethorphan site in the brain are also suitable as potentiating agents for the anticonvulsants. A method of treating epilepsy and other convulsions include the steps of introducing to the patient an effective amount of the compound comprising an anti-epileptic drug and potentiating amount of dextromethorphan or one of the related compounds.