Cindy, whatever you do please don't buy any medications online from companies that aren't from the United States. I just saw on the news last night that several people have been buying medications for their pets online from places like Australia and they were getting fake meds that caused their animals to become sick or the meds didn't work at all. I've been buying my flea meds from entirelypets.com and they usually always have some kind of sale going on. Good luck.