Tracey, the lactise is the bacteria that breaks down lactose. That is what our little boys aren't producing enough of. The drops he is on is called Lacteze, I just picked them up without a prescription from my local chemist. The drops are made of glycerin and lactise. HTH. Re the calcium, I'm still taking the blackmores multi vit. but my chemist told me to take extra calcium tablets just incase. Jack is still in alot of discomfort but he has improved alot since I have stopped my dairy intake. So veronica, I'm now on soy products only and I have also cut down on my sugar intake. He is back to his 7 hours night sleeps just still very unsettled during the day. But definately a big difference already, just fingers crossed it continues this way.