(Following is not in accordance with standard horary practice and uses whole sign house format)
I'll use the Part of Medicine (ascendant+jupiter-sun) to estimate and answer to this question:
-POM falls @ 1 Sagittarius
-the Sun (arbiter of truth, veracity, "the real thing", etc) flows toward the POM
-dispositor of the POM is Jupiter, and Jupiter (exalted in Cancer) also flows toward the POM
...based on these testimonies, I would say that the herbal medicinal compound received by the querent is actually what it is claimed to be (ie it is in fact that combination of herbal and other ingredients as claimed by whoever supplied the querent with the mixture)