I'm sorry :(
Metronidazole is very effective against obligate anaerobes and flagellated protozoa. Although it is primarily anti-parasitic, it works better for treating many dropsy symptoms than kanamycin, but that being said the causes of dropsy can vary from viral, parasitic, to bacterial. Metro is selectively anaerobic, since anaerobic bacteria absorb it like they do nitrogen. So, pretty much it has immuno-suppresive and anti-inflammatory properties. It's referred to as an antibiotic but the name does exclude it's original anti-protozoal properties. It's also sometimes prescribed to people as well with bacterial, and viral infections. More so than parasitic because we have better medications available.
I found a study on it a while ago as well, and I wish I kept the pdf to it, but I will try again to find it.
But if you feel you have greater success with kanamycin, then of course still use it. I'm not saying it doesn't work since it does :)
Last edited by Narny105; 06-06-2013 at 10:03 PM.