I believe Prazipro is made by the same company that owns/produces Hikari. Are Hikari products available from anyone near you?
If not, Prazipro is praziquantel, which I would think would be available and there is no reason not to use a generic praziquantel if that is all you have access to. Praziquantel can often be bought at aquarium pharmacies and is used in the treatment of parasites in many species, including humans, so it shouldn't be too hard to find.