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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." 

WHAT DOES PHARMACEUTICAL GRADE FISH ANTIBIOTICS MEAN? (USP)

"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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  1. Main

    Fish Pen Forte - Penicillin 500 mg Tablets (60 Count) - Limited Quantities

    Regular Price: $39.99

    Special Price $27.50

    Out of stock

    Fish Pen Forte Penicillin 60 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen
    60 Count Fish Pen 
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 
    60 Count Fish Pen 2- Pack 

    Ingredients:
    500 mg Penicillin

    Learn More
  2. Main

    Fish Pen - Penicillin 250 mg Tablets (60 Count) - 2 Pack - Discontinued

    Regular Price: $43.98

    Special Price $28.50

    Out of stock

    This size has been discontinued by the manufacturer. Please select a link below for available sizes.

    Fish Pen Penicillin 60 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 


    Ingredients:
    250 mg Penicillin

    Learn More
  3. Main

    Fish Pen - Penicillin 250 mg Tablets (60 Count) - Discontinued

    Regular Price: $21.99

    Special Price $15.95

    Out of stock

    This size has been discontinued by the manufacturer. Please select a link below for available sizes.

    Fish Pen Penicillin 60 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen 
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 

    Ingredients:
    250 mg Penicillin

    Learn More
  4. Main

    Fish Pen Forte- Penicillin 500 mg Tablets (30 Count)

    Regular Price: $24.99

    Special Price $21.95

    Fish Pen Forte Penicillin 30 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen
    60 Count Fish Pen 
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 
    60 Count Fish Pen 2- Pack 

    Ingredients:
    500 mg Penicillin

    Learn More
  5. Main

    Fish Pen - Penicillin 250 mg Tablets (30 Count)

    Regular Price: $22.95

    Special Price $14.50

    Fish Pen Penicillin 30 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen
    60 Count Fish Pen 
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 
    60 Count Fish Pen 2- Pack 

    Ingredients:
    250 mg Penicillin

    Learn More
  6. Main

    Fish Pen - Penicillin 250 mg Tablets (12 Count)

    Regular Price: $9.99

    Special Price $8.95

    Fish Pen Penicillin 12 Count is effective treatment for pop-eyes, infected eyes, fin or tail rot, gill disease, columnaris disease, and skin ulcerations and other bacterial diseases in ornamental fish.

    Available Sizes 
    12 Count Fish Pen
    30 Count Fish Pen
    60 Count Fish Pen 
    30 Count Fish Pen Forte
    60 Count Fish Pen Forte 
    60 Count Fish Pen 2- Pack 

    Ingredients:
    250 mg Penicillin

    Learn More

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