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What should I know about promethazine before using it?

There are certain precautions you should be aware of before taking promethazine. It may cause harmful reactions if you have a history of certain medical conditions, including cancer, high blood pressure, glaucoma, seizures, diabetes, liver, heart or kidney disease, difficulty with breathing or urination, stomach problems, an overactive thyroid or a bone marrow disorder. Similarly, promethazine may interact poorly with certain medications, such as muscle relaxers, painkillers, MAO inhibitors, blood thinners or drugs that make you sleepy (sleeping pills, sedatives, etc.). It may also interact badly with medicines that treat high blood pressure, Parkinson's disease, depression, anxiety, ulcers, motion sickness, irritable bowel disease, urinary disorders, restless leg syndrome, pituitary gland tumors or mental illness, as well as other medications that treat cold and allergy symptoms.

If you are pregnant or breastfeeding, you should alert your doctor, as promethazine may cause damage to the developing fetus or nursing child's health. Also, be aware that promethazine may cause serious side effects, ranging from constipation and lightheadedness to seizures and hallucinations. Seek medical attention immediately if you experience any of these serious side effects. Additionally, you shouldn't drink alcohol while taking the medication.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.