Nasal formulation and intranasal administration therewith

A preparation for intranasal administration characterized by containing a pharmaceutically active polypeptide and an absorption enhancing system containing from about 0.5-5% w/v of at least one phospholipid of the formula I ##STR3## wherein R' and R" are the same or different each representing hydrogen, alkyl, alkenyl, alkylcarbonyl, alkenylcarbonyl, alkadienylcarbonyl, alkatrienylcarbonyl or alkatetraenylcarbonyl containing not more than 14 carbon atoms with the proviso that both R' and R" are not hydrogen, and R'" represents a hydrophilic group selected from the group consisting of 2-(trimethylammonio)ethyl, 2-aminoethyl, 2-carboxy-2-aminoethyl, 2,3-dihydroxypropyl or 2,3,4,5,6-pentahydroxycyclohexyl.

A preparation for intranasal administration characterized by containing insulin, an insulin derivative, a mixture of insulin and at least one insulin derivative, or a mixture of insulin derivatives and an absorption enhancing system containing from about 0.5-5% w/v of at least one phospholipid of the formula I ##STR4## wherein R' and R" are the same or different each representing hydrogen, alkyl, alkenyl, alkylcarbonyl, alkenylcarbonyl, alkadienylcarbonyl, alkatrienylcarbonyl or alkatetraenylcarbonyl containing not more than 14 carbon atoms with the proviso that both R' and R" are not hydrogen, and R'" represents a hydrophilic group selected from the group consisting of 2-(trimethylammonio)ethyl, 2-aminoethyl, 2-carboxy-2-aminoethyl, 2,3-dihydroxypropyl or 2,3,4,5,6-pentahydroxycyclohexyl.

A treatment method which comprises intranasally administering to one in need of treatment a preparation containing a pharmaceutically active peptide and from about 0.1-10% w/v of at least one phospholipid of the formula I ##STR5## wherein R' and R" are the same or different each representing hydrogen, alkyl, alkenyl, alkylcarbonyl, alkenylcarbonyl, alkadienylcarbonyl, alkatrienylcarbonyl or alkatetraenylcarbonyl containing not more than 14 carbon atoms with the proviso that both R' and R" are not hydrogen, and R'" represents a hydrophilic group selected from the group consisting of 2-(trimethylammonio)ethyl, 2-aminoethyl, 2-carboxy-2-aminoethyl, 2,3-dihydroxypropyl or 2,3,4,5,6-pentahydroxycyclohexyl.

A method for treating a diabetic which comprises intranasally administering thereto a preparation containing insulin, an insulin derivative, a mixture of insulin and at least one insulin derivative, or a mixture of insulin derivatives and from about 0.01-10% w/v of at least one phospholipid of the formula I ##STR6## wherein R' and R" are the same or different each representing hydrogen, alkyl, alkenyl, alkylcarbonyl, alkenylcarbonyl, alkadienylcarbonyl, alkatrienylcarbonyl or alkatetraenylcarbonyl containing not more than 14 carbon atoms with the proviso that both R' and R" are not hydrogen, and R'" represents a hydrophilic group selected from the group consisting of 2-(trimethylammonio)ethyl, 2-aminoethyl, 2-carboxy-2-aminoethyl, 2,3-dihydroxypropyl or 2,3,4,5,6-pentahydroxycyclohexyl.