Hello Madam, thank you for your question!
Unfortunately, these products have not shown any concrete efficacy in terms of concentration or other indications.
Some studies mention Omega-3 supplements, but again, they are not conclusive, and the quantities and concentrations of Omega-3 vary...
For your study environment, reduce distractions as much as possible, such as cell phones, computers, television and noise... I
write down your study goals on a list to monitor your progress and stay on track.
Take frequent short breaks (like every hour).
Finally, exercise and sufficient sleep can greatly help you relax and assimilate the material being studied.
Don't hesitate to contact me if you have any other questions, good luck with exams!
Tom Samaha, pharmacist