While you will find others that will indiscriminately dose many things with eels, I do not recommend any thing other than what I have already mentioned. General cure works very well and it is 500mg of metronidazole and 150mg of praziquantel. Another product with this very effective mixture is Fritz Paracleanse. You can do an observation and if eating well and no signs of lethargy, you could skip treatment, prophylactic treatment is not necessary. GC/FP covers the broadest range of possible parasites, dosing metro alone is better than risking exposure of an unknown chemical. Many will dose meds and the eel does survive treatment, but will die unexpectantly some time later, sometimes as long as a year. Some meds will damage internal organs and it takes time for the organs to fail. Praziquantel is found in a popular product called PraziPro. Metro is very effective on intestinal worms.