Dandelion acts on lymphs, kidneys AND liver/gallbladder, so you could be feeling it act on the liver. It helps to increase bile.
Lecithin is not a hormone regulator; they say that tofu is but lecithin is a compound refined from soy, it doesn't have the estrogenic compounds along with it. It is a pure phospholipid, something that is a part of just about every cell in your body.
Chinese bitters will cleanse the liver, which will ultimately help your hormones. GCG helps gallbladder and liver, and is the best one to take for pain, altho I have found its action to be irritating at times, and have to reduce the dose.
the best solution is a mini-flush. One that uses a small dose of olive oil/grapefruit juice so that things are flushed out, but not violently. Do intense bowel management so that all toxins are taken out quickly. Carrot juice is also great. Then in about 1-2 weeks do a major flush.
the stopping vitamins/supplements rule is actually for the kidneys. Every now and again, say after every 2-4 liver flushes, it's a good idea to do some basic kidney management.