What can I do when visiting relatives with cats when Im allergic

I am super allergic to cats and I am going to another state to visit my future mother-in-law and she has cats.

What can I take that won't make me drowsy? Something over the counter, as I do not have time to get a prescription.

And what else can they do to help me out?

They aren't going to go out and buy a hepa filter or anything, so something inexpensive.

Yup it is good that you are asking before you go there. The best way to dodge the allergies is to start 4 days before you go. I am allergic to just about everything, and I am a scientist so I'll hook you up with basic stuff to help you out.

Ok step 1- go to your local drug store or Mart. Pick up enough Alevert (or Claratin- same thing) to last a few days longer than you are staying. Start taking them 4 days BEFORE you go. This kind of drug stops allergies way upstream of most other drugs so you have to have them in you for a few days to make sure you are protected when you are actually around the cats and you need to use it every day as the box says.

Step 2- pack extra clothes, especially PJ's and change your clothes and PJ's daily and keep them in your cat free bag- cat allergen is small and sticky it will get all over your clothes fast, so keep clean ones in your bag while you visit.

Step 3- ask if they can vacume before you visit and keep your room cat free and even open a window in there if the weather is good enough. Make this room your safe room. It won't be allergy free, but it will be cleaner.