I love Zarbee's brand anything. They make great products that are safe but actually work. There are times when my allergies flare up from pet dander. My parents have a dog and my inlaws have a cat. Whenever we visit I get a little stuffed up. The Zarbee's provides a great relief from that! It works quickly and doesn't have nasty side effects. It doesn't make me tired like Zyrtec does. I take one or two tablets and within 20 to 30 minutes I'm feeling so much better. They are inexpensive (and often go on sale since they are relatively new). When they go on sale I stock up. I use them and my husband uses them too. He is allergic to cats so he always takes Zarbee's Allergy Relief when we visit his mom. He is then able to be in the same room with her cat and not have watery eyes, runny nose, and sneezing. This product is great and I will continue to buy it for a long time! The relief is quick and lasts for several hours which is great!