KINIKORA AquaVitalize Pop Cap, Instantly Turn 16.9oz Water into a Nutrient-Rich, 7 Kinds of Multi-Vitamins(A B1 B3 B5 B6 D E), Sugar Free, Greenapple Taste, 5 Count

I was excited to try this product but unfortunately, it doesn’t fit any of my water bottles. Most of the information on the packaging, other than one of the nutrition fact boxes, is in a non-English language so I’m assuming it fits water bottles that are standard size for a country other than USA.Because they don’t fit, I poked a hole in the underside of one and poured it into my water and shook it. It has a really great flavor, sweet and sour but not too sweet.I like that there are only 15 calories for this drink. I also like the idea for these caps but it would have been a lot better if I could have used it the way it’s supposed to be used.(Note: Some other reviewers have stated they were able to remove an adapter in order to get it to fit. I tried and tried and nothing comes apart from mine. Perhaps some are different? I even used 2 pairs of pliers to try pulling it apart but nothing comes loose.)

Look at the pictures on the product page to learn how to remove the adapter! It is a a thin clear plastic piece that twists off.I had the same frustration that a lot of the previous reviewers had - this just didn't fit. I came back and looked at the product page, and it does explain with words and pictures what needs to be done to get it to fit different bottle types.The box does have writing in Korean and English, but that step isn't mentioned on the box as far as I can tell.Very nice flavor - it's green apple but not sour apple. It's light and sweet. It has xylitol, stevia, and sucralose in it to sweeten it, but doesn't have that fake aftertaste.

I’m not a fan of these. I love the idea but they do NOT work with a regular water bottle. The cap doesn’t fit on a regular water bottle at all. These would be great if they fit.

Doesn't fit normal sized water bottles. Had to purchase larger mouthed bottles to even use these. I bought 2, and if I could send the unopened box back I would have.

First I'm going to focus on exactly how you can make it work with something like a standard Smart Water bottle or soda type bottle. The water bottles with the tiny caps will not work even with the adapter removed from the bottom. Okay, so first of all the part that needs to be removed is at the very bottom of the cap, a clear part that is only about a quarter inch high, and that is removed by twisting it off. Because it is such a narrow band it is not the easiest to grab and twist at first, but once you know where it is and how it works it does get easier with practice. When you unscrew it you will be holding a clear plastic adapter that is basically useless unless you happen to have a bottle with a cap in that odd size. Discard that. With the adapter removed and now out of the way the cap will in fact twist securely onto something like a Smart Water bottle or any other standard sized bottle with a full size cap on it like soda bottles. I found that removing the clear top cap, the cover for the drinking cap, is easiest if you just wiggle it back and forth from side to side rather than trying to pull it straight off or twisting it. With that removed you can just push down on the top of the cap to dispense the powder into the water. My daughter found it oddly satisfying and it will actually keep coming out if you do it a few times. Or of course you could always just make sure it's closed and shake it up since the cap is in fact screwed on tightly. The flavor of this stuff is really, really good. So good that we didn't let any go to waste even while we were struggling to figure out how to make the caps work. We just held the caps over the bottles and dispensed the powder into them with the caps still loose, then used the bottle's original cap to shake it up and poured the drink into a pitcher to try again. Once you figure them out these little things are really quite ingenius and definitely handy if you like drinking from this style of bottle cap the way my daughter does. The cap can turn pretty much any bottle into a 'sports' bottle while also adding flavor. Really low in calories and fortified with vitamins, this is something I would have gotten for her while she was in school if it had been available then. It is a bit pricey for frequent use, but for those that don't like plain water and do like sport bottle caps this could definitely be a game changer. Once they learn how to use them, at least. I honestly think these would have been better and much more accessible, especially to kids, if they didn't include that extra adapter at all and the instructions were most definitely lacking for something they made so needlessly complicated. Still, they are unique and definitely taste good, the sort of thing your kid would love to show off to their friends ... if you put the caps in place for them ahead of time or once they've figured out how to do it for themselves.

This vitamin drink tastes SO SO GOOD, but I'm begrudgingly giving it 3 stars (I really want to give 3.5) because of the delivery system.I had to refer back to the product listing and reviews to try and find a way to make the cap fit onto the water bottles I had on hand, otherwise I thought they just wouldn't work. So I removed the adapter piece like suggested and it did fit onto the water bottle I was using, but if I moved the bottle around or squeezed it, the water would drip out from the neck of the bottle. Maybe they fit better on other brands, but I don't think I'd go out of my way to buy specific or more expensive water just to drink these.Again, the Apple flavor is SO GOOD and really refreshing! If they sold this in a different form (powder packets, small liquid bottle dispenser, etc) I'd be all about it! But also, popping the cap and dispensing the product is kinda fun.

I'll start by saying, these add a nice bit of flavor to a bottle of water. Now the issue, I'm not sure what the water bottle thread pitch is in South Korea, but it's not the same as Dasani or Aquafina. I tried both bottles and the cap did not fit either. I also tried another no name brand, and it didn't work. I was able to use it by holding the cap over the bottle opening and hitting it. The kids would really enjoy these if I could find a bottle that they fit.

Well, I can attest that these do not work on all water bottles. The caps and adaptors are too big for Kirkland water bottles. But the caps without the adapters fit typical Coke/Pepsi soda bottles, so I washed one of those out and filled it with water. Once you push the cap in to release the vitamins, the cap is stuck down in the unit. I had to unscrew the top, and push the bottom up to get the drinking cap out. The cap kept falling down and closing while I drank out of it, so I had to unscrew it to drink from the bottle. The mixture is good, not too strong of a taste, refreshing. But this would be better in a pouch that can just be emptied in the water. The cap is too problematic to recommend.