What common suffix indicates that a medication is a second generation tranquilizer?

The suffix that indicates a medication is a second-generation tranquilizer is typically -zap. This suffix is commonly associated with atypical antipsychotic medications, which are categorized as second-generation antipsychotics. Examples of such medications include olanzapine and quetiapine, which play significant roles in the treatment of various psychiatric conditions by acting on neurotransmitters in the brain.

The other suffixes listed do not consistently correspond to second-generation tranquilizers. For instance, -phen is often associated with first-generation antipsychotics, -ine is a general suffix that can apply to various classes of medications, including antihistamines and some other tranquilizers, and -ol is more commonly related to other classes of drugs such as beta-blockers or steroids. Thus, recognizing that -zap is the definitive suffix for second-generation tranquilizers helps in distinguishing between the various classes of medications and understanding their pharmacological classifications.