There are web sites regarding this. I do not know if it is available in the UK though. He does call for Pedi Active in spurts. He says it helps him concentrate and it does seem to help. We will continue to use it.
Muscle testing is a form of kineseology that can be life saving.
You test each vitamin by holding it close to your body and asking whether you need it or not. Your body will answer the questions you ask. It sounds really weird. But my son and I lived in a toxic house and were VERY ill. I was taught this method of testing vitamins and it pulled me off the death bed.