A British woman has appeared in court after she was caught on camera spiking her colleagues’ coffees with Viagra, the erectile dysfunction pill.

Workers at Envirograf, a factory that makes fire protection products, began noticing something funny about their coffee. It was tasting different, and little blue specks were appearing on the surface.

“Not what you would expect to be in Nescafé,” the prosecutor Matthew Hodgetts told the court.

Determined to get to the bottom of the mystery, the company’s accountant, Katrina Gravenor,  set up a hidden camera at her desk.

Enter Karen Beale, the factory’s 62-year-old cleaner, who was secretly filmed inspecting a jar of Nescafé at Gravenor’s desk.

The footage shows her shaking the jar while wearing latex gloves, which the prosecution argues was highly suspicious behaviour.

The police were alerted and they discovered that jars of instant coffee at two of Beale’s colleagues’ desks were laced with sildenafil, the drug commonly known by the brand name Viagra.

All eyes turned to Beale, and she was swiftly cuffed by the cops and charged with attempting to administer poison with intent to injure.

Although sildenafil isn’t toxic, the prosecution still says Beale was trying to harm her colleagues.

Beale, who worked as a cleaner for seven years at the factory, denied the allegations. She said she was inspecting the coffee because her boss had asked her to when the concerns about it were raised.

The trial goes on, and it remains to be seen whether the jurors will rise to the case.

Compiled by staff writer

Pictured above: Cup of coffee, without Viagra.