Several dozen antibiotic medicines are available for use in dogs. Each requires a prescription. Eighteen of these medicines are prescribed regularly. Six of them are inexpensive to buy ($.40 per pill or less) if ordered through an online pet pharmacy. Here are those six antibiotics.
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Tetracycline
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Tetracycline is the least expensive antibiotic available for dogs. It treats a broad range of bacteria and infections.
Azulfidine
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Azulfidine is used to treat colitis. It also is available under the name Sulfasalazine.
Metronidazole
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Metronidazole, also called Flagyl, is prescribed for infections. It also acts as an anti-inflammatory.
Doxycycline
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Doxycycline is a member of the Tetracycline family, but was developed to be deeper-penetrating and longer-lasting. It is also sold under the name Vibramycin.
Keflex
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Keflex is used for common infections. It is the brand name for Cephalexin.
Amoxicillin
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Amoxicillin was originally developed as an improvement upon Penicillin, in that it lasts longer and does not degrade as quickly from stomach acid. It is prescribed for a wide range of conditions.
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