The directions on the pack will have been decided when the drug was first marketed and if further side effects are found, and
if they are reported, there will be a time delay before they appear on packaging
if ever
You will notice that I have an overwhelming distrust of the motives of pharmacutical companies and the way they 'bribe' GPs with handouts
The web has detailed
independant studies on the effects of pharmacutical drugs - I prefer to believe those.
I consider Pharma companies are worse than 2nd hand car salesmen in many respects
