Experiencing silent reflux taking betaine hcl with pepsin

My main problem is that when I take betaine hcl for an extended period of time, I experience asthmatic symptoms when I wake up in the morning such as wheezing and shortness of breath. I also remember when I was very young, I had asthma and ear infections, which I believe are symptoms of silent reflux. So if taking betaine hcl causes silent reflux symptoms, why does it happen to cause asthma like symptoms? I don't experience stomach burning because I do not take excessive amounts of hcl.
One important thing to mention is my thrush ( white coating) on tongue starts to go away when I take the hcl and my mental clarity becomes outstanding, which means nutrients are properly being absorbed and my stools also appear normal.
Is this a possible hiatal hernia?

It's not an allergic reaction since it also happens when I take high does of niacin (1-2k MG), which is suppose to boost stomach acid. I also read that pepsin can aspirate into the lungs and cause asthma / wheezing.

Bump to see if anyone has any knowledge of this or if its a hiatal hernia or a weakened LES valve.