TORONTO - The maker of the contraceptive device NuvaRing is informing women about new restrictions for the use of the product.
Merck Canada Inc. says the prescription birth control ring should not be used by women who smoke and are over age 35 or who have at least one potentially serious medical condition, including heart disease, high blood pressure, abnormal blood-fat levels, clotting disorders or diabetes.
In a Health Canada advisory Thursday, Merck also said NuvaRing should not be used by women who have had migraine headaches with vision problems or constant stomach pain caused by pancreatic dysfunction along with high levels of fats in the blood.
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