Information about Phenergan (Promethazine)
Phenergan is a medication that contains promethazine, an antihistamine with sedative, antiemetic, and anticholinergic effects. It is commonly used to treat allergies, nausea, and motion sickness, and to help with sleep issues. Additionally, Phenergan can be used for its sedative effects in combination with other medications to manage pain or provide anesthesia in certain medical situations. It works by blocking the action of histamine, a substance that triggers allergic reactions, and by affecting other receptors in the brain.
Product Highlights
- Used to alleviate allergy symptoms such as sneezing, a runny nose, and itching.
- Helps prevent and alleviate nausea, vomiting, and dizziness related to motion sickness.
- Used to control nausea and vomiting from various causes, including post-surgical nausea.
- Often prescribed for its sedative effects to help with sleep or to calm patients before medical procedures.
- Often used as part of the preoperative regimen to prevent nausea and vomiting after surgery.
Key Ingredient
Key Benefits
- Provides relief from common allergy symptoms like itching, sneezing, and runny nose.
- Controls nausea and vomiting caused by motion sickness, chemotherapy, or other conditions.
- Helps induce sleep or calm anxiety before medical procedures.
- Available in tablet, syrup, and injectable forms for flexibility in treatment.
- Can reduce symptoms of anxiety and promote sedation due to its action on neurotransmitters.
Direction of Use
- Take the prescribed dose orally, either with or without food. The dosage is usually one to three times a day, depending on the condition being treated.
- The syrup should be measured using the appropriate dosing spoon or cup and taken according to the prescribed dose.
- Typically administered by a healthcare provider, either through an intramuscular or intravenous injection.
- Carefully follow the dosage and timing instructions given by your healthcare provider.
- Do not take more than the prescribed dose to reduce the risk of side effects.
Safety Concerns
- Phenergan can cause significant drowsiness, which can impair the ability to drive or operate machinery.
- In high doses, Phenergan can depress breathing, especially in children or elderly patients.
- Though rare, some individuals may experience severe allergic reactions, including difficulty breathing or swelling of the face or throat.
- Phenergan may interact with other sedatives, alcohol, and certain medications that affect the central nervous system, increasing the risk of excessive sedation or respiratory depression.
- Side effects may include a dry mouth, blurred vision, constipation, and difficulty urinating.
- Overdose can lead to serious symptoms, including severe drowsiness, confusion, breathing difficulties, and low blood pressure.
Avoid Phenergan (Promethazine) If
- You are allergic to promethazine or any of the components of the medication.
- You have a history of respiratory problems, such as asthma or sleep apnea, as Phenergan may worsen these conditions.
- You are a child under 2 years of age due to the risk of severe respiratory depression.
- You have certain medical conditions such as narrow-angle glaucoma, severe liver disease, or intestinal obstruction.
- You are pregnant, especially in the first trimester, unless directed by a healthcare provider. Phenergan should be used during pregnancy only if the potential benefits justify the risks.
- You are breastfeeding, as promethazine can pass into breast milk and affect the nursing infant.
- You are using other central nervous system depressants, such as alcohol, narcotics, or sedatives, as this can increase the risk of severe side effects like drowsiness and respiratory depression.
