Allergy or intolerance
Most problems that appear after a liver flush, will disappear after some time, if you continue liver flushing.
Most, but not all.
If you get a gallstone stuck in the cystic duct or in other bile ducts, sometimes, consecutive flushes may not help.
If you develop acute pancreatitis as a consequence of a stone stuck, the next flush may kill you. All those exceptions to the rule happen in 1 out of 1000 people.
In your case, you may have developed some form of allergic cough, as a consequence o the flush.
It should disappear after several weeks or months of flushing, and better diet.
You may be reacting to milk,
Sugar and wheat. Eliminate all milk ,
Sugar and wheat from your diet.
WS