Which pharmaceutical company first introduced the counter-window design on asthma inhalers that displays the number of doses remaining?

In the competitive world of pharmaceutical marketing, memorable branding can be just as important as the medication itself. Some medical product logos and designs have become iconic within the healthcare industry, representing major breakthroughs in treatment options and patient care. This poll tests your knowledge about a significant product design innovation that changed how patients interact with a common medication.

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GlaxoSmithKline (GSK) with the Ventolin HFA inhaler
AstraZeneca with the Symbicort Turbuhaler
Boehringer Ingelheim with the Combivent Respimat
Teva Pharmaceuticals with the ProAir HFA inhaler