By Antony Clements-Thrower An anti-anxiety drug taken by millions of Brits has been linked to thousands of deaths in the last five years. Pegabalin is prescribed to about eight million by doctors for anxiety, epilepsy and nerve pain among other ailments. A member of the class of drugs called gabapentinoids, pregabalin was licensed first in 2004 for epilepsy, then for neuropathic or nerve pain. In the past decade, specialists started to prescribe it “off-label” for anxiety. However several people have complained at getting hooked on it and have claimed it caused them mood swings as well as suic…