NATURAL STACKS Smart Caffeine Pills - 100mg Caffeine + 200mg L-Theanine Supplement - Supports Energy and Focus - No Jitters and No Crash - 60 Capsules

Are you exhausted and mentally plus physically worn out? Life can do that to you and sometimes you need a little boost of caffeine energy to get through another day. I was feeling emotionally worn out from dealing with a situation that was not resolving itself and I was having low motivation to get things done. Then I remembered I had these capsules and figured one couldn't hurt. I will say these do give you an energy that is more long lasting and it didn't make me feel anxious or wired and I felt no crash besides that I ended up going to bed a little earlier that night. I'd say from the time I took one capsule to the moment I got active was about 20 minutes. I cleaned my whole kitchen, did several loads of laundry and did other things around the house that needed to be done. I literally felt like all the negative emotions I'd been feeling dissolved into a sense of happiness and peace. I will however say that you don't want to take these if you are not near a restroom because I found out these have a diuretic effect like coffee. Make sure to drink plenty of water even if you only take one capsule. I am not a doctor, nor is this medical advice. Some people also can't handle much caffeine due to heart or anxiety issues. So use with caution. But overall I felt these were safe enough for me and did give me more energy than a cup of coffee. I personally would not take more than one capsule at a time during a day and would not take these every single day. I consider these more a last resort when I'm really low on energy or feeling emotionally drained. For that they work like a miracle! ~The Rebecca Review

How did I live without this product?

A school teacher who is a drama director. I don't use this a lot, but when needed for those longer afternoons rehearsing at the theatre. If I take 1 Smart Caffeine at lunch time, I coast energetically through the rest of the day without feeling caffeine jitters. I prefer taking it with my lunch around 12:30, but if I forget, and take 1 later, if I have 1 tablet no later than 2:00 PM, it's still effective, and does not have a linger after effect, when I go to bed. It doesn't effect my somewhat fragile sleeping pattern.

Lost one star because of the price. This stuff works great, but it's FAR more cost effective to just buy l-theanine separate in powder form and take it with coffee or a generic brand caffeine pill (you can get 120 caffeine pills for 6 bucks with 100mg of caffeine a pill, and 100 GRAMS of l-theanine powder for 22 bucks - that's (500) 200mg doses worth of l-theanine). If you really wanted to go all out, you could buy a pill machine and empty vegcaps and make them yourself - still cheaper. This is definitely a great and effective product, but the cost of the convenience of having them pre-mixed together in a vegcap is far too much in this case.

Currently trudging my way through grad school while working, and often find myself with low energy and unable to focus. Must be the lack of sleep huh? Wrong. Despite being extremely busy, I usually average about 6-8 hours of sleep per night, the exact same amount I had before I went back to grad school. Because of this, I figured I would get something relatively natural and low impact to help increase my energy and focus. I opted for this particular brand because the reviews were pretty good, the packaging and marketing looked rather legit ( I know this may seem like a crazy thing to go off of, but with vitamins if they look like they belong in an infomercial, I feel nervous.) and the price was right. I got them in the mail, and within a week I noticed that I had increased energy, and after two weeks I saw that it was even more intensified. With that said, I still hadn’t seen any improvement in focus, so I decided to “stack” (new supplement lingo I learned from a guy at a health foods store) another supplement, called NootropX - 90 caps - Mental Focus and Concentration Supplement With Memory Enhancement For Extreme Clarity and Alertness - Instant Brain and Memory Power Boost From Patented AES® Absorption System - The Ultimate Brain Vitamins which is a little bit more geared towards the focus aspect I was looking for. After two weeks of taking both of those, I noticed that I was performing better at school and work, and I had the energy to do even more than I had hoped for. My work was coming out better, as I had been able to focus more. I definitely recommend this supplement to anyone who is looking for an energy boost, and even though it didn’t give me a boost in focus, it’s still a great product and since everyone’s body is different it may work for you!

You should know that this can have the reverse effect and make you sleepy. Took me a week to figure out why I could hardly.function after starting this supplement. No jittery feelings, but several naps. So a no-go for me.

Perhaps my favorite supplement, and I have quite a few bottles on my counter. Its possible to achieve similar results with bulk theanine powder and coffee or some other caffeine source, but this is pre-mixed with the right ratio, and takes all the guesswork out of caffeinating yourself. For what its worth, I am sensitive to caffeine and easily get tweaked out on it. But if used correctly, this theanine-balanced product is great. It has even effectively reversed a number of mental funks, and actually improved my sleep on a few occasions. Here are some tips if you are new to caffeine or very sensitive to stimulants: * Take the minimum effective dose. * Dissolve it in a beverage and sip slowly, to better modulate dosage. * Don't use daily. Take it every other day. Give yourself a longer break once in a while. * Don't take any after 2PM. * If you are sensitive to caffeine, its especially important to fully hydrate yourself with water or mineral water (pretend like you're drinking alcohol and want to avoid a hangover).

Did not work for me. Made me tired, super irritable and everything was in a weird slow motion for several hours. I didn't get any caffeine feel whatsoever. It was the complete opposite. The item says it's returnable, but when I tried to return it it said it was ineligible for a return. What a waste of $20 bucks.

Good product,, I like it