Well, it's not exactly the choice of those companies to list all the side effects -- obviously, they're required to by law. Depending on what the disease is, you might be willing to put up with a whole lot of side effects (cancer is a good example of that.) The other thing is that the probability of the different side effects and the degree of the side effects might make you see things differently.
Here's an MSDS that looks pretty unpleasant...
KEEP OUT OF THE REACH OF CHILDREN
Route(s) of Entry: Inhalation? Yes , Skin? Yes , Eyes? Yes , Ingestion? Yes
Potential Health Effects (Acute and Chronic)
Contact with skin or eyes may irritate and burn. Inhalation can irritate nose and throat. Overexposure can cause headache, drowsiness, confusion, loss of coordination, unconsciousness and death.
Signs and Symptoms Of Exposure
Early to moderate CNS depression may be evidenced by giddiness, headache, dizziness and nausea; in extreme cases, unconsciousness, respiratory depression and death may occur.
Medical Conditions Generally Aggravated By Exposure
Pre-existing eye and/or skin irritation, respiratory, and/or digestive disorders.
...sounds like nasty stuff, but it's for alcohol.
