Yes, Dramamine (dimenhydrinate) is a highly effective antihistamine for preventing and treating the nausea and dizziness associated with sea sickness. In 2026, it remains one of the most common over-the-counter solutions for cruisers. It works by dulling the inner ear's motion-sensing ability and blocking the brain's "vomiting center" signals. For maximum effectiveness, you must take it 30 to 60 minutes before boarding or entering rough waters; it is far less effective once you are already feeling ill. The primary downside is significant drowsiness, though "Less Drowsy" versions (containing meclizine) are available. Medical professionals in 2026 often suggest testing the medication at home first to see how it affects your alertness, as it can impair your ability to safely navigate a moving ship's decks or participate in high-energy shore excursions.