Side Effects.

[MWB]

Why do medications have side effects? Why can't the manufacturers take the offending stuff out?

[stonekicker]

because the chemicals in drugs sometimes have an effect on more than one bodily function, organ or system at a time! for example - some antipsychotics reduce the chemical overstimulation in the brain which cause hallucinations (auditory, olfactory, visual, tactile etc.) but also stimulate the salivary glands, causing drooling. like most things in life - you have to weigh up the costs/benefits of stuff. btw - you can take other medication to stop some side effects, but they of course have side effects of their own too!

[sqad617]

stonekickers answer is excellent.
The human body is not a standard "model"
The "stuff" that gives you the side effects is almost certainly the "stuff" that "cures" you.

It is a "payoff"

[abay]

Get more details about the side effects in this site.
http://www.anees.net