Which pharmaceutical company first introduced color-coded inhaler devices as a branding strategy that also improved patient medication adherence?

The pharmaceutical industry relies heavily on effective branding strategies to differentiate medications in competitive markets. Beyond just selling products, medical branding must balance marketing appeal with regulatory compliance, patient trust, and healthcare professional recognition. This trivia question explores a significant pharmaceutical branding innovation that changed how patients interact with their medications.

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GlaxoSmithKline (GSK) with their Diskus/Accuhaler platform
AstraZeneca with their Turbuhaler/Turbohaler device
Boehringer Ingelheim with their Respimat Soft Mist Inhaler
Teva Pharmaceuticals with their ProAir system