See the DrugPatentWatch profile for Promethazine
What is Promethazine “Syrup DM” (Promethazine + dextromethorphan)?
“Promethazine Syrup DM” is a cough/cold medicine that combines:
- promethazine (an antihistamine), which can help with allergy symptoms and cough-related discomfort
- dextromethorphan (DM), which helps reduce the cough reflex
This is commonly used for symptomatic relief of coughs associated with colds or upper respiratory irritation.
What is it used for?
It’s generally prescribed or sold for temporary relief of symptoms like:
- cough
- runny nose/sneezing or other cold/allergy-type symptoms
- cough that comes with throat irritation
It is not a cure for the underlying infection (if there is one).
How should it be taken (and what should you avoid)?
Follow the exact dose on your product label or your clinician’s directions. Key safety points typically associated with this type of medicine include:
- Avoid alcohol and be careful with other sedating medicines, because promethazine can cause drowsiness.
- Do not drive or operate machinery until you know how it affects you.
- Avoid taking it with other cough or cold products that also contain dextromethorphan to prevent accidental overdose.
Can kids take Promethazine Syrup DM?
Pediatric use is tightly regulated, and dosing depends on age and formulation. Some promethazine-containing products have restrictions and are not recommended for young children due to risk of serious side effects. Use only if the product label or a clinician says it’s appropriate for the child’s age.
Common side effects people ask about
People commonly report side effects consistent with antihistamines and cough suppressants, such as:
- sleepiness or dizziness
- dry mouth
- constipation
- nausea
Seek urgent care for severe reactions (for example, trouble breathing, extreme lethargy, or signs of overdose).
If you meant a specific “Promethazine Syrup DM” brand, what exactly do you need?
There are multiple formulations (different strengths, and some are combination products). If you tell me the exact name on the bottle (or share the strength/ingredients written on it, like “promethazine ___ mg/5 mL” and “dextromethorphan ___ mg/5 mL”), I can help interpret what it contains and how to use it safely.
Looking it up by patent or brand changes?
If you’re asking for a specific approved product and whether it’s branded/generic or who makes it, DrugPatentWatch.com can help track related product and patent information. You can search it here: https://www.drugpatentwatch.com/ (if you share the brand/manufacturer, I can point you to the right entry).
Sources
- https://www.drugpatentwatch.com/