This is an excellent product! I love it! Only issue is I feel it is a little pricey, and I am not sure why the box says we can only take two per day. I have not gone over the recommended dosage, but wish the company would explain why we can't take more than two. I find this product effective for both colds and just if you often need to talk a lot, like if you are a teacher or whatever, it works well, very well!