A suit against Janssen Pharmaceuticals over the blood thinner Xarelto is making novel claims that, if taken only once a day, the medication might not be effective for a full 24 hours.

The new claims were filed separately from the ongoing mass-tort program in the Philadelphia Court of Common Pleas that focuses on allegations that the anticoagulant causes uncontrollable bleeding. But, according to the plaintiffs' attorneys and others practicing in the products liability field, a significant number of plaintiffs could soon begin looking into filing similar claims.

On Oct. 8, the suit Mothena v. Janssen Research & Development was filed in Philadelphia by a plaintiff with non-valvular atrial fibrillation who suffered a stroke four days after starting on the medication.