Whereas herbal preparations tend to bring about balance, strength, and recovery in the body, toxic chemicals tend to establish chaotic physiological events inside the body (while sometimes only forcing a singular 'health' response that might be superficially desirable). Although some medicines can certainly alleviate some symptoms (especially in emergency situations, such as anaphylactic shock), one is still left to deal with the toxic side-effects of the medicines. This is why much research today is tending to favor less toxic chemical insults in terms of medications.
Any detox needs to be conducted CAREFULLY. In some cases I don't believe that a detox is safe at all. If too much toxin is dumped into the general circulation in one hit, kidney failure and heart attack become an issue.
So, although medicines (and pollution, and drugs, and pesticides) can build up in your system over extended time (being stored in deep tissues), they could be released en masse at a later date leading to the above noted catastrophic health events, or worse. The elderly, sick and very young should be extremely careful about any major change in their lifestyle (even via exercise, and even taking herbs that might stimulate a big "detox" event). A sudden health 'kick' can kill. Get professional advice before making big changes in your life.
See: http://poisonedpeople.com & http://poisoningandlegalaction.com.au. For a full listing of any references (e.g. "(Dingle, 2005)") given above, please see my online Essay located at: http://poisoningandlegalaction.com.au/es
Murray Thompson (BAppSci Environmental Health 1998; Hons I Social Ecology 1999; Current Sociology PhD student, University of Western Sydney)