I don't think one can fully review a product without long term use. In the short time I have been taking this product it seems to have made a difference. Mucus production in my lungs has decreased significantly. Equating these results to one product is difficult as I take others. I must say since I started using Mucolyxir my lungs are more open with less mucus production. I plan to order more, and that is the true test. If it did nothing I would not consider purchasing more product. Get back to me in September. By then I will know if Mucolyxir is making the difference.