Water soluble Azithromycin salt and its eye drop

Azithromycin is first reacted with equivalent organic or inorganic salt to produce water soluble salt, with it then further produced into eye drop, including eye tablet comprising the water soluble salt of Azithromycin and some medical supplementary material as well as special liquid comprising water, medical supplementary material and bacteriostat. When used, the eye tablet is thrown into the special liquid and the mixture liquid is shacked to obtain clear and transparent eye drop for dropping eye. Compared with available oral preparation, the eye drop is well soluble, low in dosage, direct absorbed in eye to reach the effective bacteriostasis density fast and other advantages.