Health Canada says it will review a declaration by American government experts who say a key ingredient in over-the-counter cold and allergy medications also available in this country does not work to get rid of nasal and sinus congestion.
Advisers to the U.S. Food and Drug Administration voted unanimously this week against the effectiveness of orally administered decongestantphenylephrine, found in medications such as Sudafed and DayQuil.
Advisers to the U.S. Food and Drug Administration voted unanimously this week against the effectiveness of orally administered decongestantphenylephrine, found in medications such as Sudafed and DayQuil.