I have some supplements for my 4 year old son and he will not take them. One supplement is liquid vitamin B complex (it tastes nasty), The other two are amino acids that are capsul form. I usually open up the capsul and put it in applesauce or yogart - I don't think they have a taste, but he knows it is in there and won't touch it. These supplements are supposed to help calm him and were recommended by our nutritionist. Any advice?