Fritz Expel-P Parasitic Fish Medication
Fritz Expel-P (Levamisole HCl) is a powerful anthelmintic and immune-boosting treatment for fish. It is safe for both freshwater and marine environments and effectively targets internal parasites, especially nematodes.
Expel-P works against Nematodes, Roundworms, Nodular Worms, and Hookworms. It can also be used as a coral dip to help control flatworms and nudibranchs. The product does not affect bio-filters, aquatic plants, other invertebrates, or healthy fish.
It supports fish immunity and is ideal for maintaining healthy aquatic ecosystems. Not effective against Cestodes (tapeworms) or Trematodes (flukes).
| Product Details |
|---|
| Active Ingredient: Levamisole HCl |
| Form: 1ea/10 ct |
| Target Parasites: Nematodes, Roundworms, Nodular Worms, Hookworms |
| Usage: Fish treatment, coral dip |
| Safe for: Freshwater, marine environments, bio-filters, plants, healthy fish |
| Not effective against: Cestodes, Trematodes |
FAQ
Can Expel-P be used in both freshwater and marine aquariums?
Yes, Fritz Expel-P is safe for both freshwater and marine environments.
Does Expel-P affect the aquarium’s filter or plants?
No, Expel-P does not harm the bio-filter, aquatic plants, or other invertebrates.
Is Expel-P effective against tapeworms or flukes?
No, Expel-P is not effective against Cestodes (tapeworms) or Trematodes (flukes).

Isaac Allan –
Used Expel-P on my freshwater tank with roundworm issues. The fish showed improvement within a week. No side effects on plants or filter. Good for nematode control.
Penelope Quinn –
Applied it to a coral setup to deal with flatworms. Saw noticeable reduction after treatment. Works well as a coral dip, though not a complete solution.
Ella Henderson –
Tried it on a marine tank with hookworms. Fish stayed healthy and active. No damage to the ecosystem. Recommended for nematode problems.