Getting generic viagra tested for toxins.

Every once and awhile I still encounter some newspaper headlines about toxic substances found in generic medication.

It made me wonder if I should get my pills tested as well at a fairly cheap but good laboratory. By toxins, I mean heavy metals, lead, mercury etc. The viagra that I use is Eregra from Varma Pharmacy in India. They seem legit, but still.

Therefore, does anyone have experience with this, or know about a respectable lab for me to send my pills to get them analyzed?

It is common knowlegde that Chinese labs add ground gypsum to V or C however Idian pharmacology industry although not highly reputable is growing very fast and most generics are manufactured in India these days.