I adopted two very sick Cockatoos. After two days on this medication. Unbelievable !!! Amazing recovery. Birds were under Vet care. He also knew I was using this drug for them. Said its what he would of prescribed also. Mind you now, I have owned large parrots for years. Of course my birds got sick on the weekend when its hard to find help or it is so costly. I still took them to the vets on Monday morning for further treatment. It helped get them through the weekend. After blood work was done. Their whit count was down showing a infection. Thank goodness I ordered this med a few months ago. It worked for me. Thanks to Jeffers!!!