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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.
Alfredo |
VERIFIED OPINION
SMART CAFFEINE
4-hour coffee
EssentialSeries Intelligent Caffeine has been an effective supplement for improving my energy and focus. If you are looking for a natural energy boost and no noticeable side effects, this product could be an excellent choice. I would recommend it and would consider purchasing it again in the future.
Adriana |
VERIFIED OPINION
SMART CAFFEINE
Very good
I love this product, I take it on those days when I need an extra boost of energy and it feels great. It doesn't make me sleepy at night and doesn't leave me over-activated.
Alicia |
VERIFIED OPINION
SMART CAFFEINE
Personally I like the normal ones better
Personally caffeine in 200mg tabs have worked better for me than these, but everyone is different.
Rafa |
VERIFIED OPINION
SMART CAFFEINE
Effective
For when you don't want the typical caffeine high, this is the solution. It activates you less but for longer.
Bryansao |
VERIFIED OPINION
SMART CAFFEINE
It works
The days that I have taken it, I have felt less tired, and stronger at the gym. I don't know if it will be more effective than regular caffeine. I only take it on leg days and sometimes on chest day. It had expired on me and I still noticed the effects, maybe if I had taken it earlier it would be even more functional, I don't know.
Salva |
VERIFIED OPINION
SMART CAFFEINE
Good energy boost
Fantastic for my morning cardio workouts done on an empty stomach. The energy boost you need.
Lcg |
VERIFIED OPINION
SMART CAFFEINE
I have very little
I have been taking them for a short time and I can't evaluate them very well yet. I started taking them for my competitive exams and it is noticeable.
Raul |
VERIFIED OPINION
SMART CAFFEINE
Incredible for study-exercise.
Smart caffeine is amazing! It gives me the energy boost I need without the jitters or discomfort that sometimes come with other sources of caffeine - perfect for keeping me alert and focused throughout the day!
Chris |
VERIFIED OPINION
SMART CAFFEINE
Super product.
Small capsules, very pleasant to swallow. No extreme up or down after ingestion. Very pleasant and helpful.
Cristina |
VERIFIED OPINION
SMART CAFFEINE
It hasn't kept me awake at night.
I bought it as a substitute for coffee in the morning and even taking an extra coffee has not kept me awake at midday. I have to say that I have been taking it for 3 months.
Minimum purchase of units!





