Fish Antibiotics

All of the medicines we carry are NON-PRESCRIPTION fish antibiotics.  They are USP grade antibiotics produced by pharmaceutical companies.  The Dosages and Strengths and medications are for use in ornamental or pet fish only.

Fish Mox, Fish Flex, Fish Zole, Fish Cillin, Fish Flox, Fish Cycline

"All Thomas Labs fish antibiotics have high potency and contain pharmaceutical grade quality ingredients." 


"Pharmaceutical Grade is the highest quality substance used, products meeting this grade must be greater than 99% pure, and cannot contain binders, fillers, excipients, dyes or unknown substances." (source: Thomas Labs Product Catalog)

Types of Fish Antibiotics - For More Information Click on Each Type or Read " About Fish Antibiotics "

Fish Antibiotics in tablets or capsules

Fish Antibiotics in raw pure powder form

Fish Antibiotic Powder in single dose packets

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    Fish Flex Forte - Cephalexin/Keflex 500 mg Capsules (100 Count) - 3 Pack

    Regular Price: $149.97

    Special Price $113.95

    Fish Flex Forte 100 Count (Cephalexin also known as Keflex) is a broad-spectrum antibiotic used in the treatment of a wide range of bacterial infections. It is effective against a number of pathogentic bacteria associated with ornamental fish diseases.

    Available Sizes
    12 Count Fish Flex
    12 Count Fish Flex Forte
    30 Count Fish Flex
    100 Count Fish Flex 
    30 Count Fish Flex Forte
    100 Count Fish Flex Forte
    100 Count Fish Flex - 2 Pack
    100 Count Fish Flex Forte - 2 Pack
    100 Count Fish Flex Forte - 3 Pack

    500 mg Cephalexin

    Learn More
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    Fish Antibiotics Variety Package - 3 Count

    Regular Price: $124.97

    Special Price $101.95

    This Fish Antibiotic Package includes three of the most popular medications available to treat your fish from bacterial infections.  If you have an Aquaponic setup you know that if wait to buy medicines until your fish are sick you could lose your entire setup by the time the medicines arrive in the mail.  Our packages are designed to give you a broad coverage for different bacterial infections that can harm your fish and the investment and time you have put into your Aquaponics or aquarium setup.

    Fish Mox Forte 100 Count
    Fish Flox Forte 30 Count
    Fish Flex Forte 100 Count

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