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What antibiotics for cats

If your cat has a UTI your vet will probably recommend a course of antibiotics.

Antibiotics for cats are usually short-term and are used to treat bacterial infections of the bladder, kidneys or urethra.

They are often used in combination with other medications, such as painkillers, to treat the symptoms of UTIs.

These antibiotics work by killing off the bacteria that are causing an infection.

The main types of antibiotics for cats are:






Penicillin is the antibiotic of choice. It is a natural substance produced by bacteria that is not harmful to humans.

In cats, penicillin can be given by mouth, injection or IV.

Penicillin is also used to treat other types of infections, such as some forms of pneumonia, ear infections and skin infections.

If your cat is allergic to penicillin, your vet may recommend another antibiotic.

How long does penicillin take to work?

The time it takes for penicillin to start working depends on the type of infection.

The most common type of infection is a UTI. If your cat has a UTI, it will usually be treated with penicillin.

However, if your cat has a bacterial bone or joint infection, it may be treated with an antibiotic called cephalosporin, such as cefotaxime.

A penicillin allergy is a common cause of anaphylaxis in cats.

If your cat is allergic to penicillin, you can give it an alternative antibiotic called amoxicillin instead.

Penicillin is given to cats over 6 months old as a liquid.

It is also available as an injection.

Penicillin is usually effective against most types of bacteria, but it does not work against some types of bacteria.

People do not get penicillin-related side effects.

Penicillin is usually well tolerated by cats. If it makes your cat feel sick, you can try another type of antibiotic.

Macrolide antibiotics

Macrolide antibiotics are usually more effective than penicillin for treating UTIs in cats.

They are also more likely to cause side effects, as they can affect the kidneys.

There are two main types of macrolide antibiotic:


erythromycin ethylsuccinate

erythromycin is used less often than other types of macrolide antibiotic because it can cause side effects.

It affects the kidneys, so it is likely to be more likely to cause side effects.

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