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Fish Bendazole (Fenbendazole), 250 mg Packets

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Product Overview

How To Use

What’s in it?


Questions & Answers

Product Description

Fish Bendazole, which contains the active ingredient fenbendazole, works against many common types of organism, including Aiptasia anemones, Camallanus, Planaria, and more. It is one of the most effective, fast-acting agents for treating aquatic parasite infections, as well as other harmful organisms. Anti-parasitic and incredibly effective, this medication is formulated to eradicate worms and other types of parasites from saltwater or freshwater aquariums. It works to remove pests both from the fish and from their environment.

What is Fish Bendazole (Fenbendazole), 250 mg Packets?

Fish Bendazole (Fenbendazole) is a highly effective anti-parasitic fish medication is designed to remove worms and other parasites from fresh and saltwater aquariums. It works well on parasites such as Planaria worms, Camallanus worms, Aiptasia anemones, and many more.

Who is Fish Bendazole (Fenbendazole), 250 mg Packets for?

For use in fish.

Why use Fish Bendazole (Fenbendazole), 250 mg Packets?

Features of Fish Bendazole:
  • Easy-to-administer and convenient packets of powder
  • Great for use in saltwater or freshwater aquariums
  • Works to remove worms from the fish and from their environment
  • Effective against parasites like Aiptasia anemones, Camallanus worms, Planaria worms, and more
  • Anti-parasitic, incredibly effective medication is formulated for the removal of worms and other types of parasite

How does Fish Bendazole (Fenbendazole), 250 mg Packets work?

Fenbendazole is an incredibly effective worming agent for saltwater and freshwater fish. Because fish do not build a resistance to this medication, it is the first-line treatment over levamisole. It works so rapidly that often, you can see worms coming out of the infected fish in under an hour.


Thomas Laboratories

Active ingredient(s):

Fenbendazole 250 mg

How is Fish Bendazole (Fenbendazole), 250 mg Packets sold?

3 count, 12 count or 30 count (250 mg) powder packets

What special precautions are there?

  • Only for use in ornamental or aquarium fish.
  • This product should not be administered in tanks with corals, mushrooms, Cnidarians, anemones, snails, or starfish. It can be harmful or potentially lead to death.
  • Keep away from animals and children.
  • Do not use in humans.
  • Do not administer to fish intended to be consumed by humans.

What to do if overdose?

Contact your closest emergency pet hospital.

How can I store Fish Bendazole (Fenbendazole), 250 mg Packets?

Store in a dry and cool environment.

Helpful Tips:

Thomas Labs' Fish Bendazole is the only pure fenbendazole source on the market. Alternatives are only 22% active.


Directions for Use: Administer 1 packet (250 mg) with approximately 4 ounces of food and let soak for 30 minutes. It’s suggested to use tank water to wet the food, allowing the absorption of Fish Bendazole. Use for a 3-day duration with water changes and filtration between treatments. For aquarium and ornamental fish only. 

* Do NOT use in tanks with desired starfish, snails, anemones, Cnidarians, mushrooms, or corals as it will have a negative effect and possibly cause death.

Main Ingredients

Active Ingredients (in each packet):
Fenbendazole....250 mg

Inactive Ingredients:
Dextrose, maltodextrin 

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Fish Bendazole (Fenbendazole), 250 mg Packets

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