This Elderberry flavour tastes good without any bad aftertastes. The powder comes in slim packets that are easy to tear open with your fingers. All you do is add it to a glass of water and stir well. It seems to dissolve in water just fine, with a slight effervescence.
One thing that is annoying to me, though, is that whether I pour the powder in first or pour water in first, there is always a bit of powder that ends up poofing up into the air. Tablet form might have been less messier.
I can’t speak to the effectiveness of this, but so far, it tastes good and is easy to use on a daily basis.