McGuire, who went to university at 16, took 32 Nurofen Plus tablets a day to feed his secret habit. But after losing his job he struggled to pay for his addiction.
The 31-year-old's scheme saw him fill empty packets with the Seroquel he was being prescribed for schizophrenia.
The court heard how McGuire then tried to buy Nurofen Plus at pharmacies using a card he knew would be declined. This created the distraction he needed to discreetly swap his doctored packet for a fresh one and walk away.
Compare that explanation to the Mail's front page story on 26 August 2011, written by Jenny Hope and Colin Fernandez:
Dangerous anti-psychotic drugs may have been deliberately placed in thousands of packets of Nurofen Plus by animal rights activists, it emerged last night...
It is suspected militant activists carried out the sabotage operation with the intention of damaging Nurofen Plus's makers, Reckitt Benckiser. The company may have been targeted because it tests its products on animals.