So, for some reason, I bought this by accident (or due to an Amazon error) as I've always purchased the royal jelly/bee pollen combo.  Anyways, royal jelly is supposed to be a good source of BH4 which apparently I am lacking in.  I like the taste of this better than the royal jelly/bee pollen combo, which I don't mind.  I do feel like this product is a good addition to my nutritional program and I highly recommend it.