With Kiddy-Calm it is important to remember that the purer (more organic) you child's diet is, the less benefits will be noticable, HOWEVER magnisium sulphate has numerous "hidden' benefits, things you would never notice like helps with the absorption of calcium, assists brain developemnet, soothes sunburn, breaks up the lactin build-up in athletes, soothes aching legaments, magnisium sulphate paste is a very old remedy for abcesses and boils.
magnisium sulphate is given introveniously when you go into pre-term labour, bathing in it can help ease labour pains etc.
But, sorry to steal your post, it should be about tantrums - Kiddy-calm really helped Liam cos he ate LOADS of junk, but the difference was gradual, not immediate, in fact the first 3 nights we used it he had the worst tantrums I have ever experienced and I was very sceptical, however once it had started de-toxing him, I started seeing the benefits (I am so glad I did not give up the first few evenings).
For Brandon, who is calm and generally quite placid anyway I did not see much difference but cos they bath together he baths in it as well, and I have noticed his concentration levels have improved
Each child is different, so will react differently to whatever you do, rescue remedy worked a charm on Brandon, but not at all on Liam, so you need to try a few things for a few weeks at a time to find what best suits your child. Just whatever you do, whether you "medicate (Kiddy-Calm / rescue remedy) or thru discipline, you need to stick it out for at leaset a week or 2, even if you get horrible results at first