Which pharmaceutical product's 1997 direct-to-consumer marketing campaign revolutionized medical advertising and became the first blockbuster medication to reach $1 billion in sales through TV commercials?

The pharmaceutical industry has seen many groundbreaking products over the decades, but marketing innovations have also transformed how medical products reach healthcare professionals and patients. This trivia question focuses on a pharmaceutical brand launch that changed the industry's approach to marketing prescription medications. Test your knowledge of this landmark shift in medical product marketing!

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Viagra (sildenafil) by Pfizer
Prozac (fluoxetine) by Eli Lilly
Claritin (loratadine) by Schering-Plough
Lipitor (atorvastatin) by Warner-Lambert/Pfizer