Took as a precaution on my first cruise....
I was hoping I wouldn't have to find out if these worked, but let me tell you. They do work. I got a little sick on the cruise and I used 1 it helped. I had to use a new 1 each day. They say 1 is good for 2 days NO I found out I needed a new 1 each day!!
Rating: 4 stars