I wonder if these are even safe to take? Some people seem to write praises about it but it's not known if it really does make you smarter or not. Well, nothing

I wonder if these are even safe to take? Some people seem to write praises about it but it's not known if it really does make you smarter or not. Well, nothing really beats smoking sativa and drinking coffee. Vastly improved concentration, uptake of information, problem solving, writing & speaking. Constant hunger and desire to eat enormous amount of food is the only real downside.