We are sure that HSN® is your best purchase option and that is why we want to answer any questions you may have.
The product reviews and opinions published reflect only the customers’ views and experiences. HSN does not verify or endorse such comments or claims, and is not responsible for the content provided in the reviews. Statements regarding food supplements have not been evaluated by the EFSA (European Food Safety Authority) and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.
Sergio |
Verified purchase
SMART CAFFEINE *
I was pleasantly surprised
I take it half an hour before races, and I have been pleasantly surprised, delaying the onset of fatigue.
Agus |
Verified purchase
SMART CAFFEINE *
It shows
you can see that it activates you have to be careful because if you are not used to it, it hurts your head.
Jaime |
Verified purchase
SMART CAFFEINE *
The effect is noticeable
Thanks to the combination I can concentrate more on my study tasks, the only thing is that on the third day of use, it no longer has such an effect. So I have to alternate day in and day out.
Carol |
Verified purchase
SMART CAFFEINE *
I like
I am doing very well. It is noticeable in energy smells during the day.
Toni |
Verified purchase
SMART CAFFEINE *
Good
Caffeine with sustained release so you don't crash and don't flu the engine haha.
Luis |
Verified purchase
SMART CAFFEINE *
Easy to obtain caffeine
If you don't like coffee or don't want to drink it, it is a great alternative to keep you active during the day, but I don't think it is the best pre-workout.
Jorge |
Verified purchase
SMART CAFFEINE *
For those days when you can't get out of bed.
Good energy supply with slow-release caffeine (8 hours +-) and theanine. An indispensable supplement for exams and competitive examinations.
Jn |
Verified purchase
SMART CAFFEINE *
Without further ado
It is not very effective really, it tended to wear off immediately and I don't usually consume this, normal caffeine is much better.
María Serrano |
Verified purchase
SMART CAFFEINE *
Gradually activating caffeine
Good caffeine, it activates you little by little and does not give you sudden energy drops. It is very good for when you need an extra energy boost. They are small capsules, which is appreciated!
Ricky |
Verified purchase
SMART CAFFEINE *
Do not get upset
it is a very good product to take as a pre-workout.... does not make your head crazy and gives you that energy to give it all in the gym.
Minimum purchase of units!






