Generic Phenergan Syrup (Promethazine)

Common use

Phenergan Syrup (promethazine) is used to treat allergic reactions, hay fever, motion sickness, nausea, vomiting, and to provide mild sedation. It works by blocking histamine receptors and affecting certain areas of the brain that control nausea and sedation.

Dosage and direction

Phenergan Syrup should be taken exactly as directed by a healthcare provider. It is usually taken by mouth with or without food. A proper measuring device should be used for liquid doses. Do not exceed the prescribed amount.

Precautions

Before using Phenergan, inform your doctor if you have asthma, sleep apnea, lung disease, glaucoma, liver disease, seizures, gastrointestinal obstruction, urinary retention, or cardiovascular conditions. This medication may cause drowsiness—avoid driving or operating machinery. Alcohol increases sedative effects and should be avoided.

Contraindications

Do not use Phenergan if you are allergic to promethazine or other phenothiazines. It is contraindicated in children under 2 years old due to the risk of severe breathing problems. It should not be used in individuals with severe CNS depression or certain respiratory conditions.

Possible side effect

Common side effects include drowsiness, dizziness, blurred vision, dry mouth, constipation, or restlessness. Serious side effects may include breathing difficulties, severe confusion, seizures, irregular heartbeat, jaundice, or severe allergic reaction. Seek medical attention if serious symptoms develop.

Drug interaction

Phenergan may interact with sedatives, sleeping pills, opioids, antidepressants, antipsychotics, muscle relaxants, seizure medications, and alcohol. Inform your doctor about all medications and supplements you are taking.

Missed dose

If a dose is missed, take it when you remember unless it is close to the next scheduled dose. Skip the missed dose if needed—do not double the dose.

Overdose

Overdose symptoms may include extreme drowsiness, confusion, slow or shallow breathing, seizures, or loss of consciousness. Seek emergency medical attention immediately.

Storage

Store Phenergan Syrup at room temperature, away from heat, light, and moisture. Keep the bottle tightly closed and out of reach of children and pets.

Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.