Not pure???!!!

Not happy with this, does not dissolve completely like they claimed. My order was fulfilled by Amazon but the company it came from was lotus blooming herbs LLC. Leaves black stuff that sinks to the bottom and does not dissolve. You have to let it sit for 20+ mins then mix it, transfer it to another cup and look at the bottom of the original cup. No matter how hard you try to dissolve them they won't, it's like plastic or something. Was not a fluke, I have been able to replicate many times. Different cups. .

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