After doing any cleansing/flushes, the metabolism needs to restore itself (some loss of minerals and nutrients).
One of the functions of the "Public Citizen" group is that they publish a boo with their evaluation of every medication on the market (about $30 at their website), but they couldn't get the FDA to keep Mircette off the market.
Not eating solid foods for a while would ease strain on your digestive system and you could get excellent (superior) nutrition from vegetable juices instead (plus you wouldn't be draining your body of the enormous amount of energy needed for digestion, veg. juice only requires metabolism). Taking oral vitamins might become more inefficient if the colon isn't working well.