I tried around a hundred different herbs, pre-RPD diet, and they were all either completely useless or reduced one symptom but made other symptoms worse. It is vaguely possible that if those herbs had been unprocessed and sourced from the wild, that they might have been effective, but I am sceptical.
Herbs are an interesting topic. In order to get potency out of them they have to be grown properly (preferably wild) harvested, prepared, stored. combined, etc properly.
Most of the stuff you get in stores are none of the above.
The reason wild is best, in the event that anyone on this site needs to be told is that in the wild plants will find places to live that are optimum because they don't have an artificial person situation to help them survive and thrive. They will find a place that has the right soil, moisture, sun exposure, etc. to provide them with proper nutrition, otherwise they will die. Unlike us humans that have figured out how to survive in the middle of a city amidst unoptimum
environmental stressors.
Same is true with gathering honey as Goodsamaritan has explained.
Another problem with herbs is that when you read literature on herbs including what I and others say here is that some things are not apropos for everyone.
ie. I do wonderfully with milk. Some do OK and some do terrible. The same is true with everything that you can put into or onto your body. That's why when I see companies advertising herbal this and natural that I cringe.
For some people garlic is a Godsend, for me it is hell on wheels.
So take advice on what to eat with a grain of salt........ or sugar.... or
Instead if you like it, eat it in a natural form, not in a pill and try to find versions that are available locally (read free for the picking) and some herbs grow in the woods near where you live. Read "Stalking The Wild Asparagus" or equivalent books, about a guy that goes out for a walk in the woods and gets his salad for dinner daily. This is herbs at their maximum potency.
Chamomile is found everywhere. It's a weed.
Remember that the people who bottle herbs could care a less about their product other than the design on the bottle, because to them it's a product. They don't prosper if you are healthy, despite what they say.