I was using Blackmore's echinacea forte for a long time (because I have a weak immune system and tend to get very ill during certain times of the month) which was a decent enough product but very expensive, then my husband looked on Amazon and found this product, which is both of excellent quality and crazily cheap. I found that with these tablets I was getting sick even less frequently than with Blackmore's. It is not a perfect fix of course, I still get some symptoms, but in terms of how much better my quality of life is I would recommend this product to anyone who gets frequent cold or flu like symptoms with no diagnosable cause.
Regarding the size of the tablets, they are very small and easy to swallow. They do leave a slight tingling on the tongue if the tablet breaks up before you swallow it, but I don't take away any stars for that because it wasn't particularly unpleasant.