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.
Taken for: Anxiety, Itching, Allergy, Insomnia, Sedation ... Hydroxyzine is an anxiety medication. Uses: Hydroxyzine is prescribed for Anxiety, Itching, Allergy and Insomnia and is mostly mentioned together with these indications. In addition, it is used in Sedation.