See the DrugPatentWatch profile for Promethazine
What does “Promethazine DM syrup qualitest” mean?
“Promethazine DM syrup” is a cough medicine that typically combines:
- promethazine (an antihistamine), and
- dextromethorphan (a cough suppressant).
The word “qualitest” usually refers to Qualitest Pharmaceuticals, a company that makes generic drugs. So the search intent is likely: “Is this Promethazine DM syrup made by Qualitest?” or “Is Qualitest’s version of Promethazine DM syrup good/legit?”
Is Qualitest’s Promethazine DM syrup legitimate and what should you check?
If you mean “Qualitest” as the manufacturer, the key checks are practical:
- Confirm the label shows “Qualitest” as the manufacturer (or the distributor listed on the package).
- Verify the National Drug Code (NDC) on the bottle matches the product listing from the pharmacy or retailer.
- Buy from a reputable pharmacy/retailer and avoid listings that don’t clearly show an NDC or full labeling.
Is generic Promethazine DM (Qualitest) likely to work the same as brand-name?
For most regulated generics, the active ingredients and strength are required to match the brand product, so the intended effects on cough should be comparable. The main differences you might see are inactive ingredients (which can affect taste, color, or tolerability), not the core medicine.
What side effects are people asking about with Promethazine DM?
Common concerns with promethazine-based cough syrups include:
- drowsiness/sedation and dizziness (promethazine can cause sleepiness)
- constipation or dry mouth
- nausea
Patients often ask whether it’s safe to drive or mix with other sedating medications; it generally increases sedation risk.
Drug interactions and safety: what to watch for
People commonly search this because promethazine can interact with other drugs that cause drowsiness. Extra caution is needed with:
- alcohol
- opioids
- benzodiazepines (like alprazolam, clonazepam)
- other sedating antihistamines or sleep medicines
If you tell me the exact product label (active ingredient strengths and the NDC), I can help you interpret what it is and what to watch for.
Quick check: what do you mean by “qualitest” here?
Reply with one of these and I’ll narrow it down:
1) Do you mean “Qualitest is the manufacturer” (yes/no)?
2) What’s the bottle strength, like “promethazine HCl ___ mg and dextromethorphan HBr ___ mg per ___ mL”?
3) If you can, share the NDC number from the label.