Quadnite Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (pro-METH-uh-zeen)
Quadnite Oral Interactions
Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop or change the dosage of any medicine before checking with them first.
This drug should not be used with the following medications because very serious interactions may occur:
- epinephrine for low blood pressure
- metrizamide
- sibutramine
If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting promethazine.
Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially:
- anticholinergics (e.g., benztropine, belladonna alkaloids)
- cancer chemotherapy (e.g., methotrexate)
- guanethidine
- guanadrel
Tell your doctor or pharmacist if you have taken MAO inhibitors (e.g., furazolidone, isocarboxazid, linezolid, moclobemide, phenelzine, procarbazine, selegiline, tranylcypromine) within 2 weeks before, during or after taking promethazine.
Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: certain antihistamines (e.g., diphenhydramine), anti-seizure drugs (e.g., carbamazepine), medicine for sleep or anxiety (e.g., alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., chlorpromazine, risperidone, trazodone).
Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients or other antihistamines. Ask your pharmacist about the safe use of those products.
Also report the use of drugs which might increase seizure risk (decrease seizure threshold) when combined with promethazine such as bupropion, isoniazid (INH), phenothiazines (e.g., thioridazine), theophylline, tramadol, or tricyclic antidepressants (e.g., amitriptyline), among others. Consult your doctor or pharmacist for details.
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