Phenergan 50 mg is an intramuscular (IM) injection containing promethazine hydrochloride, an antihistamine with sedative and antiemetic properties. It effectively treats nausea, vomiting, and anxiety, particularly post-operatively or in situations requiring rapid symptom relief.
Dosage and Administration
A doctor prescribes the dose, typically 25-50 mg. Administering 50 mg IM involves injecting the medication deep into a large muscle mass, usually the buttock (gluteus maximus) or thigh (vastus lateralis). Always use proper sterile technique to prevent infection. Never administer intravenously.
Important Considerations
Side effects may include drowsiness, dizziness, dry mouth, and blurred vision. Patients should avoid operating machinery or driving after receiving the injection. Allergic reactions, though rare, are possible. Contraindications exist for patients with certain conditions, such as porphyria or known promethazine allergy. Always check for potential drug interactions before administration. Observe the patient for at least 30 minutes post-injection to monitor for any adverse reactions.
Monitoring and Patient Care
Monitor vital signs, including blood pressure and heart rate, following administration. Document the administration time, dose, and any observed side effects. Patient education is vital; inform the patient about potential side effects and the importance of avoiding activities requiring alertness.
