Syntrax nector lumpy?

I've found that mixing Nectar with water, even using a blender bottle and shaking it to hell and back, makes it lumpy and extremely foamy. I stopped buying the fruity flavors. Now I use the chocolate truffle and mix it with fat free Lactaid. I still use my blender but I don't need to use the whisk ball and it comes out lump free (mostly - sometimes I might get a small lump or two but nothing gross) and not foamy.

That's been my experience too! Shook it to hell and back, lumpy, foamy and slimy.  Yuck! Thanks, glad to know I'm not the only one.