Effect has a lot of subtle meanings as a noun, but to me the meaning a result seems to be at the core of all the definitions. For example, you can say, The effect was eye-popping, or The sound effects were amazing, or The rain had no effect on Amy's hairdo..
There are some side effects to using hydroxyzine for your dog. Many dogs that take hydroxyzine suffer from a loss of appetite. Others will experience dehydration, vomiting, diarrhea or general lethargy as well. These side effects are relatively uncommon and generally mild.
What are the possible side effects of hydroxyzine (Vistaril)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using hydroxyzine and call your doctor at once if you have a serious side effect such as: