You can read in this BBC News report about the risks incurred by taking Avandia, a drug manufatcured by GlaxoSmithKline, but I urge you to watch the Panorama programme itself on iPlayer so that you have a fuller understanding of the seriousness of the risks to your health posed by taking this drug.
Drug companies are not in business for your health; they are in business for their profits. Their reassurances about the safety of their products cannot be trusted. They have a long, scandalous history of lies, evasions and corruption.
I have written about this drug before. If you click on the Avandia tag beneath this blogpost you will be able to read my earlier posts about it.
If you have already developed fluid retention/weight gain as a side-effect of taking Avandia or any other prescription drug, you can reduce this by seriously cutting down on salt and salty food.