17. This ad recommends non-prescription Acid-Ease over non-prescription Pepticaid
for relief of excess stomach acid. The only reason offered is that doctors have written 76
million more prescriptions for the full-strength prescription form of Acid-Ease than for
full-strength Pepticaid. While this reason is relevant, and provides some grounds for
preferring Acid-Ease over Pepticaid, it is insufficient as it stands because it depends on
three unwarranted assumptions.
The first assumption is that the prescription form of Acid-Ease is more popular
among doctors. But this might not be the case, even though doctors have written 76
million more prescriptions for Acid-Ease. Acid-Ease may have been available for
several more years than Pepticaid; and in the years when both products were available,
Pepticaid might have actually been prescribed more often than Acid-Ease.
The second assumption is that doctors prefer the prescription form of Acid-Ease
for the reason that it is in fact more effective at relieving excess stomach acid. However,
doctors may have preferred Acid-Ease for reasons other than its effectiveness. Perhaps
Acid-Ease is produced by a larger, more familiar drug company or by one that
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