I had a horrible thing happen to me by Mucinex DM, it helps alot when one gets flu or cold and keeps phlegm from building up in your lungs, my colds often turn into asthma & bronchitis so it's a big help; I THOUGHT!! WELL I took it for 3 days and woke up fainting and breathing almost stopped. I hesitate to use doctors or 911 these days so I just used my mind to start breathing again, I now have leaky gut syndrome which I know I got from the Mucinex cuz I looked it up. I can heal it but it takes months even years. I had dinner with a friend and told him my gut is a mess and I think from Mucinex and he said he had a similar experience with the DM version where it made his stomach all acidic. I said to myself this is just another "pandemic " another bio-weapon. They are getting at us every way they can