Phenergan Injection 2 ml is used to manage and treat allergic conditions, nausea and vomiting, motion sickness, and sedation. It contains Promethazine, which blocks the effects of histamine in your brain and reduces symptoms. Common side effects of Phenergan Injection 2 ml are drowsiness, dizziness, tiredness, incoordination, lack of energy, increased blood pressure or occasional low blood pressure.
