Fish Pen Forte™ - Penicillin 500 mg 30 count
$52.99 $56.99

Fish Pen Forte™ - Penicillin 500 mg 30 count is an antibiotic that exerts a bactericidal action on gram-positive and some gram-negative bacteria in fish. Used in the control of some common bacterial diseases in fish, including diseases caused by bacteria such as fin and tail rot and Flexibacteria infections.

This product is manufactured in the USA

Available Sizes/Strengths

  • 500 mg 30 count

Active Ingredients: Penicillin 250 mg


  • 500mg - Add one tablet (500 mg) into aquarium for each 10 gallons of water to be treated. Repeat in 24 hours. It is suggested that a partial water change be made between treatments. While duration of treatment depends on type and severity of the infection, it is recommended that extended baths in the medication continue for a minimum of 5 days & for not more than 10 days. Discontinue treatment with this medication if no improvement is noted within 5 days.

Caution: For aquarium and ornamental fish only. Not for human use. This product should not be given to fish intended for human consumption. Keep out of the reach of children and animals. Keep container tightly closed and in a cool dry place. In case of accidental overdose, contact a health professional immediately.

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