Promethazine Oral Solution 6.25 mg/5 mg per 5 mL is a highly effective medication used to treat a variety of conditions. This oral solution contains promethazine, a powerful anti-histamine that is known for its effectiveness in treating allergies, motion sickness, and nausea. The main benefit of using Promethazine Oral Solution is its fast-acting relief, making it the go-to medication for those suffering from sudden bouts of allergies or motion sickness.