I'd like to ask about these poultry drugs "florfenicol, rifampicin, doxycycline, amantadine, Zhiyuan Jing"

Florfenicol: Antibacterial agent. Veterinary antibacterial agent is used for bacterial diseases of pigs, chickens and fish caused by sensitive bacteria, especially for respiratory infection and intestinal infection. Rifampicin: bulk drug (anti-tuberculosis antibiotic) amantadine: antiviral drug, but also anti-tremor and paralysis drug. Mixing with water and stirring in duck feed will not produce chemical reaction and adverse reaction, which will lead to duck death.