I have been drinking it for two weeks now and I have seen quite an improvement in my memory and concentration. I started it because I felt chaos in my head. I was struggling to organize my tasks, I couldn't concentrate on what I was saying and what I was reading. Now I see quite an improvement. I gave it 4 stars because sometimes I get a headache and I suspect the pill is to blame.

It helps me a lot when I have intense periods and need more concentration and a clearer mind. I have noticed that as soon as I take it, I have more focus and clarity. I have bought several boxes and I will continue to take it.

Very effective... stimulation, well-being, good memory and concentration, but only as long as you take the supplement... afterwards you return to the... factory settings!

I bought them for my daughter who was taking the Panhellenic exams. I don't know if it was the capsules that helped or the studying she did all year, but in the rote-learning subjects she scored almost perfect marks.

... and I didn't take it for many days to have results, as it caused me intense stomach pains...

In the few days that I took it (4-5), I can't say that I have an opinion about its effectiveness on concentration, but I was forced to stop taking it because it upset my stomach and intestines. From the very first day, I was looking inside the box for more information about the product, such as possible side effects—which I consider obvious should be listed on every supplement—and the only thing I found inside was a leaflet with advertisements for the company's other products. Is this possible?!

I didn't believe it when I bought it, but it had some effect. Of course, no one should expect that it will regenerate brain cells.

I also noticed a difference, guys. Clarity, balance, overall better and calmer brain function. It was recommended to me by a General Practitioner who told me to take it for 30 days, which I did.

It does its job very well in combination with the corresponding one from Evio for energy and stimulation; it helped me a lot with a job that required a clear mind

It helped me a lot with concentration from the first days I got it at work. Where my mind was wandering and I couldn't concentrate on work at all, suddenly I saw a difference. I recommend it

I have been taking 1 pill a day for years, I am 63 years old and I had worrying memory loss, hereditary with Alzheimer's in my parents. I do not have headaches, my mind is clear and sharper, the ability for puzzles that I always had has returned.

Very good product, I have been using it for a month before my exams and I have noticed a big difference. I can remember and memorize much more things than before, well done....

It caused me such a headache and dizziness that I almost started running to doctors! I am a doctor myself and I have to say that it does not do anything good! I wonder why I tried it.

I tried a pill and not only did it not help me, but I also had an incredible migraine for many hours. Additionally, I felt dizzy and had a strange squeezing sensation in my chest. Out of curiosity, I read the comments and I do not recommend it to anyone based on personal experience.

3rd pill today, headache and heavy head. It feels a bit heavy in my stomach.
It's logical for every organism to react differently to a substance. Maybe it doesn't agree with me.
TYN

Although initially I thought I saw some improvement in concentration, in the end it caused me so many headaches daily that it had the exact opposite effect.

It's nothing special, but it can actually help with concentration. As for memory, I can't judge.

It didn't work for me.... I bought it expecting it to be better and it disappointed me. It clouded my thinking, it didn't help at all with memory and concentration.... Let's try something else....

I don't know if it ever helped me. The only sure thing is that an hour after taking it, I was working at full speed and then crashing heavily

Although at first I do believe that it helped me with concentration, especially when I was writing an exam, a few days later it started causing me migraines, and now I suffer from incredible headaches while I can no longer discern any improvement in concentration or memory for sure. For me, however, it's not worth feeling like I'm being hit with hammers on the head in order to have better memory.

I was really trying to remember something and I was hitting a wall....that's how I felt!! After a few days of taking these vitamins, my mind started to open up, my thoughts became clearer, and I could concentrate more easily on something. I'm not saying that I remember everything now, but I'm getting closer to what I was trying to remember and sometimes I actually remember it...!!!!!

After purchasing two packages and using them for about 60 days, the conclusion for me was partial irritability and no benefit in terms of memory or clarity. On the positive side, maybe a slight increase in concentration, nothing positive, nothing negative. Money wasted.

I was taking it during exam period for better memory... I can't say I noticed a noticeable difference... It worked more when I took it in combination with another vitamin... Personally, it made me very nervous! My mother, who was also taking it, saw results at first, but not afterwards... I was expecting more, to be honest...

I bought it last week before the start of the national exams. I think it helped me organize and somehow review all the material in my mind. It helped with concentration and somewhat with mental relaxation after a year of studying. I do not recommend starting it at the beginning of the year (if you are taking national exams). I believe that if you start it two weeks before the first exam and continue taking it until you finish, you will be fine. {Good luck to those who are taking exams}

I bought it during the period of the national exams in order to be able to remember some things better. I don't know if other people had migraines from this supplement, but these migraines helped me learn some things better and have better memory and concentration at the same time. The only issue for me with these capsules is that they were easy to choke on and required a lot of water to be able to swallow them. Other than that, they are very good

I tried them once and saw a great improvement in concentration and memory. I understood everything I read. I took a break for a week when I finished and tried other supplements to see if I would see a bigger difference, but unfortunately I wasted twice the money elsewhere without any results. As soon as I bought them again and took them, towards the end I saw that Eviol Brain Function is the right one for my brain. After two weeks, I will buy them again because I see improvement in memory and concentration apart from reading. They work instantly with a good morning natural juice and bread slices with honey. I highly recommend them. And at the best price.

I bought it due to increased anxiety and pressure at work because of the workload and volume, which make it difficult for me to concentrate, resulting in occasional procrastination. I have been taking it for 3 days now and it successfully delivers what it promises. I still have to see if it will have the same effectiveness under even greater pressure.

I read about 8 hours a day due to my field of study. It has helped me a lot with concentration. Indeed, it provides clarity. However, it is very expensive.