Ravinder Kaur, 34, had denied charges of lacing her manager Laura Knowles' coffee with mercury amalgam used in dental fillings in revenge on March 16, 2012, three days after being given a warning about "poor behaviour" at work.
She has now spoken of her relief after the UK Crown Prosecution Service (CPS) decided not to pursue the case with a third trial.
"I felt freedom, I felt relieved. A huge weight has come off my shoulders I was really happy that I've won the battle of my life," she said.
"It has been a horrifying, terrifying experience that has left me scarred. I am a broken person. My dignity and my career have been destroyed," she told Birmingham Mail.
"My life has been put on hold for two years; it has made me very unwell. I cannot describe the traumatic effect this has had on me. It has also taken a toll on the lives of my family in Birmingham who have stood by me throughout. I have been stigmatised and victimised," she added.
Three days before the coffee incident, she was handed a final written warning for allegedly leaving a patient unattended in the dental chair, an accusation Kaur denied.
The crown's case was that Kaur then took "a capsule or a number of capsules of mercury, and tipped it into a mug and handed the cup of coffee to Ms Knowles to drink".
The trial heard the metal can be deadly if inhaled and causes stomach cramps if swallowed.
Knowles was taken to hospital with stomach pain, sickness and dizziness. But Kaur insisted she had not spiked Knowles' coffee with mercury.
"The long and short of it is that the Crown have decided they don't wish to proceed further in this matter," a CPS spokesperson said.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
