Before you buy this book, you need to think of why you need it. I purchased it because I am a student nurse going through clinicals weekly. I have a regular drug book, but I wanted something a little more convenient (and pocket-size) to take with me because sometimes new meds are added after I have made my med cards. So far, this book has had all the last minute meds I've needed to look up. Just remember (like the front cover says...) it only has about 1000 of the MOST POPULAR so there may occasionally be something you need to look up using the internet or a larger drug book. Otherwise, this little book is quite handy.