A process through which drug companies market their products through the mass media rather than to doctors is referred to as direct-to-consumer advertising.
A drug can be defined as a type of chemical substance that is designed and developed to provide sound health, wellness and/or healing to a sick person.
A designer drug can be defined as a type of drug that is made through a minor modification in the chemical (molecular) structure of a controlled substance such as heroin, resulting in the production of a drug with similar pharmacologic effects as those of an illegal or controlled drugs.
This ultimately implies that, a designer drug is produced synthetically in the laboratory by altering (modifying) the chemical (molecular) structure of a legally restricted, controlled or prohibited drug and marketed directly through the mass media rather than to doctors.
In conclusion, we can infer and logically deduce that a process through which drug companies market their products through the mass media rather than to doctors is referred to as direct-to-consumer advertising.
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