Health Canada is advising consumers to avoid a generic cough syrup because it contains twice the amount of active ingredient listed on the label.

The product is sold across Canada as "Cough Syrup DM" under the following brand names: People First, PharmaChoice, Procurity Encounter, ARP Preferred, Medicine Centre, United Pharmacy and Western Family.

The cough medicine, made by Jamp Pharmaceutical Corp. in Langley, B.C., contains too much dextromethorphan.

Health Canada warns consuming the wrongly mixed medicine could result in light-headedness, fatigue and slurred speech. It also warns children under the age three may be more vulnerable to other possible adverse effects, including seizures.

The recall applies specifically to "Cough Syrup DM" with a DIN 02015781. Look for lot numbers beginning with 2J29 and 3J29.