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Doctor insights on: Promethazine H Cl Syrup Dosage

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I took promethezine HCl 25 mg instead of lisinopril/ hydrochlorothiazide tab 20/25mg for 1 week by accident. Should i be worried i usually take lisinopril but when i cleaned out my medicine cabinet i must've pulled out the promethezine and started acciden

Promethazine : Promethazine is a drug that is used to manage common cold, allergic reactions and is sometimes combined with other drugs, such as dextromethorphan, to suppress cough (see the link below). It belongs to a class of drugs known as antihistaminics. Promethazine has many side effects and several important drug-drug interactions. One important side effect is drowsiness, which can become significant at higher doses. Operating machinery or driving may become dangerous while taking promethazine. Overdose of Promethazine could result in respiratory arrest and death. Other sedatives such as alcohol, narcotics, tricyclic antidepressants enhance the sedating properties of promethazine. Administration of Promethazine has been associated with reported cholestatic jaundice. Edema (swelling) has also been associated with promethazine. From your description it appears that you may be having potentially serious side effects of this medication. You should stop taking it and see a doctor. ...Read more

Dr. Syed H. Sajid
160 doctors shared insights

Promethazine (Definition)

Prevents and controls motion sickness, nausea, vomiting, and dizziness. Also used to relieve or prevent allergic reactions, helps people go to sleep, and control their pain or anxiety before or after ...Read more


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Promethazine syrup effect?

Promethazine syrup effect?

Multiple effects: Promethazine is a potent antihistamine that can cause dizziness, drowsiness, dry mouth, nausea, vomiting, weakness and occasionally more serious central nervous system side effects. It is usually well tolerated in most people. ...Read more

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Could you overdose on 2 ounces of promethazine codeine syrup?

Could you overdose on 2 ounces of promethazine codeine syrup?

Yes: Normal adult dose is 1-2 teaspoons, 2 ounces is a lot if taken as one dose. ...Read more

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What's promethazine vc syrup?

What's promethazine vc syrup?

For resp infection: This medicine contains Promethazine and phenylephrine. This medicine is most commonly used for temporary relief of upper respiratory symptoms including nasal congestio associated with allergy or the common cold. ...Read more

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Promethazine/codeine syrup side effect?

Promethazine/codeine syrup side effect?

Usually None!: In normal dossage, the only remote side-effect would be constipation, maybe itching although rare. With overdose or with blunts or cigs dipped and smoked, hallucinogenic. ...Read more

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Hello. I just took promethazine dm syrup for my cough the first time and I started coughing excessively. I can not stop coughing am I allergic ?

Hello. I just took promethazine dm syrup for my cough the first time and I started coughing excessively. I can not stop coughing  am I allergic ?

Maybe: Persistent post nasal drip (allergy or non-allergy related), acid reflux, asthma, or vocal cord problem are common causes for persistent cough. Medication side effect is often overlooked as well. Consider a virtual consult to discuss any related symptoms and more about your history for guidance. ...Read more

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Is it possible to overdose on 75ml of promethazine vc codeine syrup?

Yes: Yes. What may represent a fatal overdose for one patient may be tolerated by another patient. Any combination of opiates such as Codeine with other drugs that can cause sleepiness such as Promethazine is potentially dangerous. ...Read more

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I have bronchitis if i take promethazine-codeine syrup it will help?

I have bronchitis if i take  promethazine-codeine syrup it will help?

Maybe (not) . . .: Promethazine-codeine syrup is prescribed to cut down on cough. However, it won't affect duration of infection. Nor make it easier to breathe if you're short of breath or wheezing. Most bronchitis is caused by viruses which won't respond to antibiotics. In other words, taking antibiotics won't make you better any faster than if you didn't take them. Go see your family doc to be sure. ...Read more