Which revolutionary medical product's 1987 launch was initially controversial but later became one of the most successful pharmaceutical product launches in history, generating over $1 billion in its first year?

Medical innovations have transformed healthcare throughout history, but product launches in this field are particularly challenging due to regulatory requirements, clinical trials, and the high stakes involved. This trivia question focuses on a groundbreaking pharmaceutical product launch that changed the landscape of modern medicine. Test your knowledge about this significant moment in medical history!

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Prozac (fluoxetine) - the first selective serotonin reuptake inhibitor (SSRI) antidepressant
AZT (zidovudine) - the first approved treatment for HIV/AIDS
Lipitor (atorvastatin) - the cholesterol-lowering statin medication
Epogen (epoetin alfa) - the synthetic hormone for treating anemia