A natural product derived from milk. It is not a drug at all and yet in many cases of stress related illness it is of considerable calming help. It is well proven to help with the stress of fireworks and during 2009 (which was the first year we have used it) we got many good reports of its efficacy in treating firework phobia. It is said to be useful in all sorts of stress related conditions and is completely safe. It can be used intermittently or permanently and seems to be an excellent addition to a therapeutic armoury. It is not cheap but very valuable.