PHILADELPHIA - Pennsylvania law allows drug companies to be sued if they fail to stop marketing drugs known to be unreasonably harmful, and the manufacturers are not immune from being sued for damages for lack of due care, the Pennsylvania Supreme Court ruled Jan. 22 in an eight-year-old diet drug lung injury case (Patsy Lance, et al. v. Wyeth, et al., Nos. 17 EAP 2011 and 18 EAP 2011, Pa. Sup.; 2014 Pa. LEXIS 205).