Fish Cillin (Ampicillin, 250 mg) 100 Capsules

Item #E8L1


Fish Cillin (Ampicillin, 250 mg) 100 Capsules

Fish Cillin (Ampicillin, 250 mg) by Thomas Labs is a Fish Antibiotic used to treat bacterial diseases of fish. Exerts an agent capable of destroying gram-positive and some gram-negative bacteria. 100 Capsules. Read More

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Fish Cillin, 100 Capsules

Ampicillin, 250 mg

Used to treat some common bacterial diseases of fish including Aeromonas and Pseudomonas genera and mycobacterial group also known as gill disease and fin and tail rot. Exerts an agent capable of destroying gram-positive and some gram-negative bacteria.

No prescription required.

Fish Cillin Directions:

  • dissolve contents of one capsule (250mg) into aquarium for each 10 gallons of water to be treated
  • repeat in 24 hours
  • duration of treatment depends on type and severity of infection
  • it is recommended that extended medication baths continue for a minimum of 5 days and a maximum of 10 days
  • discontinue treatment if no improvement is noted within 5 days


Caution:  Intended for in use in aquarium and ornamental fish only and should not be given to fish intended for human consumption. Not for human use. Keep out of the reach of children.

Storage: Keep container tightly closed and in a cool, dry place.

About Thomas Labs

Thomas Labs is the only FDA registered and inspected fish antibiotic facility offering USP certified quality antibiotics. For over 30 years, Thomas Labs has been the leader in supplying of USP grade fish antibiotics for the pet health products market.


  • Brand: Thomas Labs
  • Type: Antibiotic
  • Ingredient: Ampicillin
  • Size: 100 Count
  • Form: Capsules

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  1. 5.0 out of 5 stars

    "Impressed With Jeffers"

    My first time doing business with Jeffers -- and they were not only fairly priced but excellent on communications and shipping. I'll definitely use them again!

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