Not really. Doesn't beat sleep and the price is top expensive (profiteering) unless you have friends coming back from abroad.

What's that?

Yeah, it helps, especially when you are sleep deprived, can go a couple more hours without much mental cloudiness.

But still doesn't beat proper sleep and exercise. Just change your mindset and discipline to sleep more and exercise consistently - most people are just avoiding it and then try to fix things with supplements (which obviously won't fix the key problem).