Promethazine HCl Syrup
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Promethazine HCl Syrup
Promethazine HCl Syrup Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Promethazine HCl Syrup is a phenothiazine used as a sedative, and to treat allergic reactions and nausea. It is available in generic form. Common side effects of Promethazine HCl Syrup include drowsiness, dizziness, fatigue, nervousness, hallucinations, dry mouth, and nausea.
The recommended dose of Promethazine HCl Syrup is 25 mg. Alcohol, narcotics, antidepressants, epinephrine, anticholinergics, and MAOIs may interact with Promethazine HCl Syrup. Tell your doctor all medications you take. Do not drive, use machinery, or do any activity that requires alertness when taking Promethazine HCl Syrup. Before taking Promethazine HCl Syrup tell your doctor if you have cardiovascular disease or impaired liver function. If you are pregnant only take Promethazine HCl Syrup if the potential benefit outweighs the potential risk to the fetus. Do not take Promethazine HCl Syrup if you are breastfeeding.
Our Promethazine HCl Syrup Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Promethazine HCl Syrup FDA Prescribing Information: Side Effects
(Adverse Reactions)
SIDE EFFECTS
Central Nervous System- Drowsiness is the most prominent CNS effect of this drug. Sedation, somnolence, blurred vision, dizziness, confusion, disorientation, and extrapyramidal symptoms such as oculogyric crisis, torticollis, and tongue protrusion; lassitude, tinnitus, incoordination, fatigue, euphoria, nervousness, diplopia, insomnia, tremors, convulsive seizures, excitation, catatonic-like states, hysteria. Hallucinations have also been reported.
Cardiovascular- Increased or decreased blood pressure, tachycardia, bradycardia, faintness.
Dermatologic - Dermatitis, photosensitivity, urticaria.
Hematologic - Leukopenia, thrombocytopenia, thrombocytopenic purpura, agranulocytosis.
Gastrointestinal- Dry mouth, nausea, vomiting, jaundice.
Respiratory - Asthma, nasal stuffiness, respiratory depression (potentially fatal) and apnea (potentially fatal). (See WARNINGS-Respiratory Depression.)
Other - Angioneurotic edema. Neuroleptic malignant syndrome (potentially fatal) has also been reported. (See WARNINGS-Neuroleptic Malignant Syndrome.)
Paradoxical Reactions
Hyperexcitability and abnormal movements have been reported in patients following a single administration of promethazine HCl. Consideration should be given to the discontinuation of promethazine HCl and to the use of other drugs if these reactions occur. Respiratory depression, nightmares, delirium, and agitated behavior have also been reported in some of these patients.
Read the entire FDA prescribing information for Promethazine HCl Syrup (Promethazine Hydrochloride Syrup Plain) »
Additional Promethazine HCl Syrup Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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