Extremely Metallic Taste
359116
They have an extremely metallic taste.  Probably made from cheap metal.
1421379
Ordered this to help with my iron levels. The taste makes me sick-literally. Guess I'll stick to my iron meds.
1763298
I don't know where all of these 4 and 5 are coming from, because I have NEVER tasted an artificial sweetener with such a terrible aftertaste in my life.  The after taste hit within seconds of sipping my coffee.  My husband took a sip and agreed.  Tasted like tin and lingered on my tongue for hours afterwards.  I had to eat a little bit of onion to get that awful taste out of my mouth because I couldn't stand it any more and nothing I ate, aside from the onion, was getting the that aftertaste out.

In all fairness, I bought this product at Sprouts near my house not from Amazon, but it's getting returned today.  I just decided to check it out on Amazon to see if others were as offended by the aftertaste I I was.  Imagine my surprise when I saw all these 4 to 5 star reviews!  Makes me really question the validity of these Amazon reviews now.
1288737
I was excited to find this as I love grape flavor and I generally don't mind a slight chemical taste that is inherit in many artificial flavorings, however this mix tasted so strongly of chemicals that I could not drink it. I have tried varying the amount of syrup, all to no avail.
If you are looking for some good syrups to try, the SodaStream Cranberry-Raspberry is very good with little to no after taste.
4887672
I bought this as a gift for my wife. It looks nice enough and seems sturdy, but she says that after weeks of hand washing it, it still has an overwhelming smell and the water tastes metallic. I would not buy from this company again.
1117997
I purchased this product after having  bought a smaller bottle at a retail market. The smaller bottle was wonderful, it had a full caramel aroma. Upon opening this larger bottle I noticed a tinny odor and a very distant hint of caramel. After adding it to my coffee, the flavor was almost non-existant only the metallic taste that remained in my mouth for hours. I looked at the first bottle from the store, and the only difference was that the new larger bottle had caramel color added. The expiry date was later than the first yet something is wrong. Would appreciate a refund!
2144609
Well i bought these filters and installed them. They initally left a slightly black sediment at the bottom of the filtered water side containment. I flushed that down the drain as well as the 2nd round of the initial use. After that the water tasted great and I was very excited to not need to purchase any bottled water. However just a few days later my wife mentioned a metallic taste to the water. I initially thought it was the storage container we are using but it was coming directly out of the filters. Going to see if they can be refunded or replaced with a new set and hope that i have better luck. I have no idea why the taste has changed.
4891731
icky after taste that remains... almost vanilla or chemical like flavor....

Check out Ayalas mint water - much nicer, but neither as lovely as metro mint water which is no longer available.
702184
When I initially received these, I immediately washed them with a soft sponge and mild soap (common practice for utensils before you actually start eating with them). The first time I used them, all of my food had a metallic taste to it. I repeated the washing and taste testing three more times, with no change. Since they cost so little (not worth returning them), I ended up just throwing them away. While this might have been an isolated incident, I certainly won't be trying these again.
1573360
I've never written a review on Amazon but I am so dissatisfied with this product. I have had it for only 3 weeks and theres a weird metallic taste- almost like lemon but not good. I tested my regular water and it was around 350- I checked my ZERO water and it was 850! The fact that the number went that high makes me think there is something very wrong and unhealthy about this system. Not happy..... I have cleaned it and done all the recommended things to change it and its not much better.  Waste of money..
1635890
I really liked the look of this kettle and it worked as expected.  However, recently we had issues with it boiling to dry occasionally - the automatic shutoff was for some reason not always working.  The problem is this has damaged the metal inside the kettle so that the water has a strong, burnt metallic taste.  My tea now tastes terrible - we've had to switch back to our old kettle (had for over 10 years and still works great just wanted a new look).  Very disappointed.
2005651
I would give this no stars but....  I have to at least give it one. There is somewhat a raspberry flavor, however there is a wannabe chocolate after taste that is horrible and sort of metallic. Its very ichy!!!!
3954781
Whoa. This stuff tastes awful. It contains the dreaded HFCS, as well as frigging CAPSICUM ! If you are keen to know what your lips would feel like after kissing Satan, give this a try. Otherwise, avoid like a dose of the plague.
55182
I purchased a 4-pack and opened one immediately. It smelled slightly strange but I ate about 2 tablespoons. It was metallic tasting and had a bitterness that was unpleasant. A few days later I decided to try a second tub from the shipment. It tasted just as bad and I immediately developed hives inside my mouth. Afterwards, I was sick for a full day.

It tasted more contaminated than spoiled but either way, a horrible experience for someone who has been eating similar products for decades.
3525101
NOT recommended. after you dip this in your cup/container it changes the taste of the drink. Very over powering metallic taste.  I tried this in ceramic, steel and copper containers. Same for all.
Absolutely do not buy it.
1901335
My brother bought a six-pack of this stuff, and I like lemon juice in my water, so I figured I would try it.

Boy oh boy am I regretting it. I can see how some people might really enjoy this drink, but to me it was a bit like being punched in the mouth. It's at first mouth-puckeringly sour with just a little bit of that "sparkling" thing, then a strong, bitter undercurrent comes through, like eating the white pith of a citrus peel. Then, finally, once that subsides, this awful metallic aftertaste just sits on the tongue. And now my stomach is hurting from the acidity.

If you like strongly-flavored things, you might enjoy this for sure. If you are expecting lemonade, or water with lemon juice, drink something else. This is more like bitter lemon juice with sparkling water.
935026
I really wanted to like this decaf blend, but honestly I thought the taste was awful. J is rated high, and thats why I decided to try it, especially because its swiss water decaf. Thats basically the only reason its getting two stars from me. I hate leaving negative reviews, but the flavor is like how others described it, as more of a donut shop coffee. I brewed it stronger but it leaves a bitter and slightly metallic flavor on your pallet. I would be willing to try their other roasts, but this one in my opinion was just not good. Maybe it was just this bag, I don't know.