i've read reviews that its a really good product, it works well. but i haven't seen anyone mention anything about diabetics . I CAN'T ask a doctor because i simply don't have one sadly.
Forget it, there is no medical evidence to support the claims and the only thing that burns calories/fat is movement, exercise.
It contains a lot of caffeine which makes you feel more alert. cheaper to have a cup of tea or coffee.
In one serving, 2 capsules...
"Guarana Seed Extract (36% caffeine = 180mg)"