Which of the following is not a metabolite of ethanol?

acetaldehyde

acetone

acetic acid

propanol

all of the above are metabolites of alcohol

2/ when a person builds up tolerance to a drug it means that:

she must take larger doses to continue to realize the same effects

she will undergo withdrawal if he stops taking the drug

she will no longer be affected by the drug

she must stop taking the drug right away

she will not develop an immune response to the drug

Adouble-blinded trial for a new indication is conducted under an ind comparing two (2) marketed drugs, at twice the approved prescribed doses. on day 2, subject 603 had difficulty breathing. although it was life-threatening initially, subject 603 was treated and discharged directly from the emergency department after complete recovery. on day 5, subject 20 had a headache, which led to hospitalization and required blood pressure lowering medications. these episodes cannot be explained on the basis of the pharmacological property of either drug or the subjects' medical histories. the investigator would submit an sae report for