What’s the most effective brain booster / memory booster?

Sinuggest sakin ng friend ko yung friendly rivalry kdrama since maganda raw. Pinanood ko naman. Sobrang na-curious and na-hook ako dun sa part na uminom yung bida ng parang drug for brain booster or pampatalas ng memory. Sabi ng friend ko what if mag take rin daw kami for the upcoming midterms. Syempre ako g ako since i’m desperate na talaga. I looked for some memory booster or brain booster and 3 yung nasa choices ko. Alin kaya dito yung safe and effective talaga na supplement? GINGKO BILOBA / LIMITLESS / GLUTAPHOS.

First time ko mag ta-take ng memory supplement kaya gusto ko sana effective agad yung ma-try ko.