1.Indication: Disease-resistant for worms, the medicine for preventing chook worms 2.Direct factory 3.Pfizer's supplier Maduramicin Ammonium premix has activity on against E.tenella,E.maxima,Eacervulina,E.necatrix,E.brunetti and E.mivati.Especially has strong activity on against E.tenella which cause great damage to chook industry.