Further, there were no significant changes in laboratory parameters, vital signs, or ECGs during the study in any treatment group, including placebo
These are safe because they're manufactured by licensed 503A compounding pharmacies with controlled concentrations, not mixed ad-hoc from commercial pens
"Oral mucolytic drugs for exacerbations of chronic obstructive pulmonary disease: systematic review"
Side effects Nervousness, jitteriness, nausea, vomiting, and in extreme cases, even tachycardia (rapid heart rate)
'Everyone is using it, so it must be safe' is wrong There is something I want you to stop and think about here