Recently I caught my dog with a block of rat poison in her mouth. She hadn't ingested any but I'm still not sure if she already had. So, I took her to the vet where she got a shot of vitamin K-1, along with a couple other treatments. We were sent home with a RX of 25mg K-1 pills and told I could fill it at any pharmacy. seems that it only comes in 5mg for humans and the cost was $170 for a two day supply. Found what I needed at vetdepot.com after shopping around for $11.50(?), give or take. The pills arrived when they were supposed to and the service was great!