L-Glutathione is causing me to have pimple breakout on my back. Is that normal? Also, by taking L-Glutathione 2x500mg/day with Vitamin C 1000mg/day cause any type of diabetes? I'm seeing a rash just after taking it for a few days. If anyone has any experience about this, please help!!

You should probably switch brands.

Sounds as if this is not the real authentic product. Be cautious. You could experience extreme weight gain and darker color skin.