Hi, I purchased this product 4 weeks ago to drink around 9am at work instead of coffee as I fast til midday. I'm writing this as I saw a 1 star review , this deserves 5 stars my only critique is it needs carnitine, this will give you a better pick me up than oxyshred I do have that in my bag for work also. I told my wife to buy a tub as she only sits down at work and needs to lose weight she has a slow metabolism. Thank you primabolics for a awesome product this will stay in my morning rotation of caffeinated products. Cheers joe from Sydney.