If I could give this 100 stars I would! I can't begin to say how ultimately pleased I am with this! I have Dog, Cat, and Dust Mite Allergies. I did allergy shots for 5 years and daily took Zyrtec D in the morning and Zyrtec in the evening and still dealt constantly with flare-ups. I read some alarming things about Zyrtec and quit. This product has changed my life! I don't take Zyrtec and don't do injections any more. I did follow their directions and did the Load Dosing of 2 capsules 3 times a day for a week, and am now on a maintenance dose of 2 capsules a day. I no longer experience flare-ups at all. I sleep better and am not constantly congested or having headaches. This is AMAZING stuff & I am so grateful!!