No, they’re not too bitter once you get used to them, and you can follow them with lots of water in order to flush out the liver.
But you should be taking the bitters directly into the mouth and not in water. Drop slightly less than half a dropper full directly onto the back of the tongue. Don’t be in a big hurry to swallow it, but don’t keep it there indefinitely either.
Our bitter receptors are located towards of the back of the tongue, and when the herbs come into contact with these receptors they stimulate the vagus nerve which in turn causes a stimulation of the flow of natural digestive juices from the exocrine glands of the mouth, stomach, pancreas, duodenum, and liver, and this produces a better digestion and helps with a range of conditions caused by inefficient or allergy-distorted digestion.