Just type in "fish antibiotics" into a search engine and you can find high quality antibiotics fit for human consumption without prescription to order over the internet. You can find articles on www.survivalblog.com about what kind is best. Always be sure to take a whole 7 to 10 day course of antibiotics not just take them until you feel better. Most of the bacteria are killed in the first few days but if you stop taking the antibiotic to soon the bacteria that remains may be antibiotic resistant then multiply and kill you.