A lot of the time you can find the manual by typing the the product name pdf. If they have a user manual online, you should be able to find it. The more common the product is, the better your odds are there will be a manual online.
Anxiety and occasional panic attacks can be caused by many things, but this is not the place to search for answers. Try typingg anxiety and panic attacks in Google and see what information you can find. There are several home remedies that you can find.