After the tablets’ rapid popularity it faced criticism from companies who said the pills were too powerful to be available without a prescription.
But after clinical studies and legal negotiations the ground breaking ‘smart drug’ is available once more.
The tablet was thrust into the spotlight three years ago when it was claimed that Limitless used Brain Plus IQ as the inspiration for the drug used in the movie.
The film sees Bradley Cooper’s tragic character Eddie rise to a superhuman standard after taking a pill that unlocked the “90per cent of your brain that you never use”.
Popularity of the drug skyrocketed among students, business workers and athletes, and it was hyped as the most powerful brain enhancer in the world.

vCard.red is a free platform for creating a mobile-friendly digital business cards. You can easily create a vCard and generate a QR code for it, allowing others to scan and save your contact details instantly.
The platform allows you to display contact information, social media links, services, and products all in one shareable link. Optional features include appointment scheduling, WhatsApp-based storefronts, media galleries, and custom design options.
Men and women between the ages 18–35 reported benefited the most from Brain Plus IQ as the effects were increased due to the ingredients’ reaction to a gene called NRXN3 in the brain.
The drug, which had no recorded side effects in clinical trials, was soon blasted by major pharmaceutical companies who claimed it was too powerful to be available without a prescription.
Many academics said it gave an unfair advantage to users, and soon it was banned from top universities like Cambridge, and quiz shows like Jeopardy!
After intense legal pressure from Big Pharma, production was halted.
But now, after three years of litigation and clinical trials showing its safety, the US Food and Drug Administration (FDA) has approved Brain Plus IQ and selling has resumed online.
It is one of the first ever cognitive enhancers to be approved by the FDA.
News of the ban being lifted has thrilled many around the world.
One student told NBC News: “My ability to think and focus more than doubled when I was able to buy Brain Plus IQ again. The pill’s return prevented me from dropping out of college.”