Jim Cramer Gives His Opinion On Allergan, USG And Arena Pharmaceuticals By: Benzinga via Benzinga September 12, 2017 at 08:01 AM EDT On CNBC's "Mad Money Lightning Round", Jim Cramer said Allergan plc (NYSE: AGN) is an inexpensive stock and he would buy ... Read More >> Related Stocks: Allergan Plc Arena Pharmaceuticals Uscf Gold Strategy Plus Income Fund