See the DrugPatentWatch profile for Codeine
What is in codeine cough syrup (typical composition)?
“Codeine syrup” is usually an oral cough or pain preparation where codeine is the active ingredient, combined with inactive ingredients that keep it sweet, stable, and easy to measure. The exact formula depends on the country/manufacturer, but common components include:
- Codeine (as codeine phosphate or codeine sulfate) — the opioid medicine that suppresses cough and relieves pain.
- Syrup base — usually one or more sweetening agents (for taste) plus a liquid vehicle to dissolve the drug.
- Solvents/preservatives — to keep the medication stable and safe during storage.
- Flavoring and coloring agents — to make the syrup palatable.
- Buffering/adjusting agents — to maintain the right pH for stability.
Because formulations vary, the precise inactive ingredients (and their amounts) must be taken from the product’s label/leaflet.
Why do labels list different “inactive ingredients” for codeine syrup?
Inactive ingredients change based on:
- Salt form (codeine phosphate vs codeine sulfate)
- Regulatory requirements in each market
- Manufacturer formulation choices for taste, shelf life, and stability
That means two products both called “codeine syrup” can have different non-medicinal components even if they contain the same active drug.
What does “codeine syrup composition” mean on a prescription or box?
When people search for composition, they typically want:
- The active ingredient name and strength (e.g., codeine ____ mg per __ mL)
- The full excipient list (sweeteners, preservatives, flavorings, etc.)
- Sometimes the dosage form details (e.g., syrup vs oral solution)
How can you check the exact composition for the specific product you have?
Look for the section titled “Composition,” “Each 5 mL contains,” or “Excipients” on the package insert or bottle label. If you share:
- the country, and
- the brand name (or a photo/text of the label showing “codeine ___ mg/5 mL”),
I can help interpret what each ingredient is for and what to watch for.
Are there safety concerns related to the syrup base (excipients)?
Yes. Some excipients can matter for certain patients (for example, sugars or specific preservatives). Also, codeine itself has important safety issues, including sedation and respiratory depression risk, especially in children or with certain drug interactions. The excipient list is the part that can differ most between products, so it’s important to match the exact bottle/label you have.
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If you tell me the brand name and the strength (e.g., “___ mg per 5 mL”), I’ll provide the likely active ingredient salt and help you read the ingredient list exactly as shown on that product.