Compression of data

Hi,
i have DB whith big size of entry(data is about 1,5kb,and it's only
text).
I use compression for db->read and db->put for this DB. I use 'zlib'
compression, but this compression use 90b for header, and this
comp.method is better for bigger entry.i want ask if exist better
compression method or library for compress entry about 1kb.
Thank you