Sea sickness syndrome, or motion sickness, occurs when there is a conflict between what your eyes see and what your inner ear (which controls balance) senses regarding movement. This sensory mismatch leads to symptoms like dizziness, nausea, and vomiting. Your medication, cinnarizine, works by calming the inner ear. It blocks calcium and histamine channels, which prevents the transmission of conflicting balance signals from your ear to the brain's vomiting center. This effectively reduces dizziness and prevents travel-related nausea, helping you feel much more comfortable.