초록 ▼

Controlled release formulations useful in controlling endoparasitic infestation in animals over a prolonged period of time are comprised of an anthelmintic agent intimately dispersed throughout a copolymeric matrix derived from the condensation of about 60 to about 95 weight percent of lactic acid a

Controlled release formulations useful in controlling endoparasitic infestation in animals over a prolonged period of time are comprised of an anthelmintic agent intimately dispersed throughout a copolymeric matrix derived from the condensation of about 60 to about 95 weight percent of lactic acid and about 40 to about 5 weight percent of glycolic acid, said copolymeric matrix being substantially free of polymerization catalyst.

대표청구항 ▼

A controlled release biodegradable dosage form useful in the prolonged therapeutic and prophylactic control of endoparasites in domestic animals comprising about 20 to about 80 percent by weight of a anthelmintic agent initimately dispersed throughout about 80 to 20 percent by weight of a copolymeri

A controlled release biodegradable dosage form useful in the prolonged therapeutic and prophylactic control of endoparasites in domestic animals comprising about 20 to about 80 percent by weight of a anthelmintic agent initimately dispersed throughout about 80 to 20 percent by weight of a copolymeric matrix derived from the condensation of about 60 to about 95 weight percent of lactic acid and about 40 to about 5 weight percent of glycolic acid, said copolymer having an inherent viscosity of about 0.08 to about 0.30 when measured in chloroform, and a molecular weight of about 6000 to about 35000, said copolymer being substantially free of polymerization catalyst.