I have been using their products for about 15 years or more and I have always had good results. I've recently come up with Bladder issues and was given Oxybutynin which I used but after a short period concluded that it wasn't for me as it really didn't work and the side effects were bad . I remembered that QNL had a Bladder supplement so I ordered some to see if that would take care of the issue and it's only been about a week so it's too soon to know BUT I'm hoping it does the job ! Time will tell buy so far so good !! QNL as far as I'm concerned has Clean and high quality products!