<p>This contains two active ingredients Cinnarizine and Dimenhydrinate. The two substances belong to different groups of medicines. Cinnarizine is part of a group called calcium antagonists. Dimenhydrinate belongs to a group called antihistamines. Both substances work by reducing symptoms of vertigo (a feeling of dizziness or spinning) and nausea (feeling sick). The combination product is more effective than the individual compounds.</p>