Collection: Fish Pen

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 Fish Antibiotics Direct we get regular new shipments of medicine 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.

Fast, FREE Shipping! Order before 2 p.m. and it ships today

(see full shipping policy for details- orders placed before 4 p.m. Eastern Monday-Friday ship the same business day. If orders are placed on Saturdays/Sundays they will ship the next business day)

2 products
  • Fish Pen - Penicillin 250 mg Tablets
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    Sale price
  • Fish Pen Forte - Penicillin 500 mg Tablets
    Regular price
    Sale price