i cant figure out if i'm old enough

Don't take pills.
Eat less food and fats.
Get more exercise.
This works - honest.

You can take them at any age. They are perfectly safe.
Unfortunately, they are perfectly safe because they do not do anything.
Real medicine has actual effects on the physiology of the body, and therefore have the potential to be dangerous if taken improperly.
Acai Berry products are a scam and have no effect on the physiology of the human body and therefore have no potential for harm.
So buy all of the acai berry pills you want, but they won't do anything except make your wallet lighter.