A familiar packaging snafu has led to another recall at Nichi-Iko Group's Sagent Pharmaceuticals. The Illinois-based manufacturer is recalling four lots of injectable levetiracetam, which is used to treat certain types of seizures, thanks to a "lack of container closure integrity" observed in reserve sample vials. The drug could become unsterile if the container it's stored in doesn't seal properly, Sagent explained in a recall announcement posted by the FDA Monday. Injecting a non-sterile product could cause serious and potentially fatal systemic infections, the company warned. To date, Sagent said it hasn't received any side effect reports linked to the suspect lots. Sagent had similar problems with a different sterile injectable earlier this year.