Q. My cat has feline infectious anemia. How often do you treat with Doxycycline? He took it for 3 weeks about a month ago

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A. Doxycycline is often used to treat during acute flareups of anemia in cats with FIA. This treatment is used to work against Mycoplasma haemofelis which is an organism that can cause infectious anemia in cats.

If your cat had received a treatment of doxycyline several weeks ago, it is best to schedule a follow-up appointment with your veterinarian. Your vet will likely want to check your cat's blood levels with a PCV (packed cell volume) test to check for anemia. If symptoms are continuing or the anemia still present, your vet may recommend additional treatments with doxycycline or other medications. If the flare up has subsided, your vet may just recommend scheduled follow-ups without treatment to monitor your cat's condition.

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