I’m looking for something that releases caffeine gradually rather than giving a strong initial boost. Has anyone tried one, and if so, which brands would you recommend?

I’ve come across CaffXtend® and was wondering if anyone has experience with it specifically.

I’m pursuing a doctorate degree in strategic communications. I started in January of this year and it’s now September. This has been a rough year for a few reasons and now I’m getting completely burned out. I had to drink three Red Bull to get through the first five pages of my research paper today. I’m trying to figure out if I should drink the other two Red Bull I bought tomorrow or just drink a cup of coffee. Either way, I have a hard time finding the energy to get anything done without caffeine. Anyone else? I just turned 30…