<p>Cinnarizine acts as an antihistamine, labyrinthine sedative and a peripheral antivasoconstrictor. Cinnarizine is a selective calcium antagonist, inhibiting the influx of Ca2+&nbsp;intracellularly. It prevents the Ca2+&nbsp;dependent contraction of arterial smooth muscle by inhibiting Ca2+&nbsp;influx through smooth muscle calcium channels and thereby, improves vestibular symptoms and prevents peripheral arterial disease</p>