No. Levamisole HCL is a dewormer that can be absorbed through the skin to deal with nematodes or roundworm infections. You can find it under the name brand Fritz Expel-P. If that doesn't work, you could try API General Cure (or Fritz Paracleanse) which treats for a different internal parasite. Metronidazole in General Cure is best used if the fish eats it.
