Jungle Anti-Parasite Medicated Fish Food: Metronidazole, Praziquantel, Levamisole. For internal flagellates, trematodes, and cestodes, which includes hexamita (hole-in-the-head), spironucleus, intestinal worms, tapeworms, and nematodes, e.g. camallanus. Feed exclusively for 3 consecutive days a week for 4 weeks. Can mix with a little Garlic Guard to make it taste better. Do not offer any other food. Fish will eventually eat it. Can be used with whole tank treatments. Safe for loaches.