Fish Pen & Pen Forte (Penicillin)

Fish Pen and Fish Pen Forte - Penicillin 250 mg and 500 mg

Fish Pen and Fish Pen Forte are manufactured by Thomas Laboratories and are both Pharmaceutical Grade Fish Antibiotics.  They come in penicillin 250 mg and penicillin 500 mg.  Currently they can be purchased in 30 and 60 count bottles.  Thomas Labs used to make 30, 60 and 100 count bottles but the price of penicillin has gone up significantly and now they are made in bottles sizes of only 30 and 60.  Each bottle of Fish Pen and Fish Pen Forte has a safety seal and has directions for fish and fish tank use and clearly shows the expiration date of the medicine.  

At FishMoxFishFlex we get 1-2 new shipments of medicine in every week to guarantee that we have the latest expiration dates possible on our fish antibiotics, and as always, place your order before 2 and we'll ship it that day.

GET FREE SAME DAY SHIPPING ON FISH PEN AND FISH PEN FORTE - BEFORE 2 P.M. M.S.T.

8 Item(s)

per page

Grid  List 

Set Descending Direction
  1. Main

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

    Regular Price: $39.99

    Special Price $27.50

    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

    Regular Price: $43.98

    Special Price $28.50

    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
    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
  3. Main

    Fish Pen Forte - Penicillin 500 mg Tablets (100 Count)

    Regular Price: $54.99

    Special Price $46.95

    Fish Pen Forte Penicillin 100 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 30 Count Fish Pen Forte 60 Count Fish Pen Forte 60 Count Fish Pen 2- Pack 12 Count Fish Pen 30 Count Fish Pen 60 Count Fish Pen 100 Count Fish Pen  Ingredients:
    500 mg Penicillin

    Learn More
  4. Main

    Fish Pen - Penicillin 250 mg Tablets (60 Count)

    Regular Price: $21.99

    Special Price $15.95

    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
    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
  5. Main

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

    Regular Price: $24.99

    Special Price $20.25

    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
  6. 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
  7. 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
  8. Main

    Fish Pen - Penicillin 250 mg Tablets (100 Count)

    Regular Price: $31.99

    Special Price $31.50

    Fish Pen Penicillin 100 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 100 Count Fish Pen Forte 

    Ingredients:
    250 mg Penicillin

    Learn More

8 Item(s)

per page

Grid  List 

Set Descending Direction