I have to say that your message was the first time I ever heard of Cordyceps–or Chlorella, for that matter. I’ve never seen Chinese herbs in pill form. Generally TCM (Traditional Chinese Medicine) is in the form it takes from nature–roots, leaves, seahorses, whatever. We strongly urge people NOT to use TCM, largely because one dried up root looks much like another, and substitutions are not uncommon (particularly of lower value products for higher value ones). This means it is very difficult to be sure that what you are getting is really what the practitioner intended, and some TCM products have caused liver or kidney failure.
TCM has been around for thousands of years, and in the hands of a competent professional–in China–may help deal with medical problems that Western medicine doesn’t handle well. But I’m afraid we just can’t trust it in the US. (Not sure about Australia.)