VAULT Caffeine Free Brain Energy Drink – Nootropic for Mental Focus Sharpness Memory and Reaction Time – No Crash or Jitters – Sugar Free – 12 Fl Oz (Pack of 12) (Watermelon)

Overall this seems like a good product though, it is very expensive. A single can is $4 where as two cups of made in Columbia excellent instant coffee is less the fifty cents. If this product were about $1.50 per can would probably purchase again. At this high price not likely to purchase again.It does seem to boost energy when tired pretty well. Found about three ounces every hour or two was the most efficient use. Taking more did not provide commensurate increase in energy. This means consuming one can at a time was rather a waste. More consumed did not increase the length of time the increase in energy was felt.What am really saying if you have the ability to pay $4 per can it may be a good thing. If not, find something else.

I don’t like it at all, will never buy again, everytime I drink it, it gives me a terrible headache, it does not taste good, it has a bad taste to it, I still have some of it in the cupboard can’t drink it

At first, I balked at the price, but then realized how much more productive I am with Vault. It's an investment that pays for itself.

As title says: It does nothing for energy, grogginess, nor mental focus. At least for me. I can't guarantee my physiological response is the same as yours.But it's 2 star and not 1 star, because it's not total trash. If you like acidic apple juice, this is drinkable. It's quite sour.

Without drinking coffee I drank half the can at start of work day then the rest an hour before lunch. I did this for 24 M-F work days one can per day. I noticeably experienced greater ability to focus and less re-reading. Also, I was not as hungry as usual leading up to lunchtime. I got on here to buy again and wow… 37% increase from $34.95. I was becoming a loyal consumer but not at almost $48. It doesn’t matter if we can include in our budget or not. This drastic jump was like ‘Hmm we have something good so here’s what it’ll cost you now.’ I’ve gone back to enjoying one cup of coffee with breakfast again (Starbucks K cup .73 cents)

I wish there was a way to try these without purchasing a whole 12 pack. I'm a Redbull fan and this has nothing on Redbull as far as "giving me wings". I purchased this because I have been wanting to find something to replace drinking an energy drink that has a high sugar content. I refuse to drink anything with crappy chemical sweeteners like Sucralose/Aspartame etc. To my dismay, I don't perceive any boost from this product. The flavor is good, albeit the carbonization could be decreased. I don't like drinking a carb drink that nearly makes me belch after every sip, or gives me that full sensation because of the gas buildup in my stomach. Sorry Vault, I wanted this to be my replacement, but it just doesn't do it for me.

Ordered a case of the Black Cherry for about $3 a can. Okay as that's fairly comparable to name-brand caffeinated brands. Wanted to order more, and now the Black Cherry is out of stock and has been for weeks. Wouldn't mind trying a different flavor, but those are $4 a piece. Too rich for me to take a chance on a flavor I probably won't like as much. Wish the Black Cherry was in stock at the price I first paid.

After trying this for several days, I feel nothing. No energy. No focus. Just a super sweet and expensive carbonated drink. I really had high hopes. Will not waste my money again