Also, if you ever have any pill you cannot identify (though this one is easily & repeatedly found at Google simply by search for "DAN 5440") then it is fast & accurate to phone your nearest Poison Control Center. Given the Letter + Number code I believe they can >> any medication for you (with or without the color mentioned), in my experience. I have done this in the past when a lone or out of place pill was found.
It is good to know their phone number in advance in case any children might visit & manage to find their way into anything from medication to cleaners or insecticides, etc. So I found it reassuring to post it inside of cabinet doors where anyone present would see it if somehow something dangerous got left in an accessible cabinet by mistake.