Is there a thing such as a chicken flavoured powder to use as flavouring when cooking?

[-x-sam-x-]

You know when you buy these chicken flavoured noodle packets from the shops, the packets usually contain a sachet inside with the flavouring. Well I had one of them left over so I used it yesterday when cooking pasta to slightly flavour it and it gave it a really good taste. I was wondering if there are any way of buying these sachets individually?