Which color, when used in pharmaceutical packaging, has been most strongly associated with increased patient perception of analgesic (pain relief) potency?

The colors used in pharmaceutical and medical product packaging aren't chosen randomly - they're carefully selected based on consumer psychology principles. Different colors can evoke specific emotional responses, communicate efficacy, suggest gentleness, or even influence patient adherence to medication regimens. This trivia question explores how color psychology intersects with medical product marketing. Can you identify which color has been scientifically shown to have the strongest psychological impact on patient perception of medication strength?

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Red - associated with strength and stimulation
Blue - associated with calmness and professionalism
White - associated with purity and clinical efficacy
Red and white combination - shown to increase perceived analgesic potency in multiple studies