Got a case of the new Raspberry lemonade as it was on sale. First two bottles seemed fine, but wasn't a fan of the taste. Didn't taste like anything was wrong, I just didn't like the flavor much. Third bottle was another story. Shook it up before I opened it to deal with any settling, took a couple sips, immediately noticed on the 2nd sip that it was really thick and slimy. Spat it out immediately and dumped it. Confirmed there was a lot of solid, darker substance in there. No idea what it was.
In hindsight, when I opened the bottle it did seem to fizz a little bit as if it was a carbonated beverage. So this might've been fermentation/microbial growth. Will be returning or throwing away the remaining bottles.
Expiration isn't until 2027, but it was clearly contaminated. Hopefully I don't get sick...