This week, four Pharmaceutical stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, Acura Pharmaceuticals (NASDAQ:ACUR) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Acura Pharmaceuticals engages in the research, development, and manufacture of pharmaceutical product candidates utilizing its proprietary Aversion and Impede technologies. In Portfolio Grader’s specific subcategories of Equity and Cash Flow, ACUR also gets A’s. For more information, get Portfolio Grader’s complete analysis of ACUR stock.

This is a strong week for Lannett Co. (AMEX:LCI). The company’s rating climbs to B from the previous week’s C. Lannett manufactures and distributes pharmaceutical products under its own trade name and under generic names. For more information, get Portfolio Grader’s complete analysis of LCI stock.

This week, Sucampo Pharmaceuticals (NASDAQ:SCMP) pushes up from a C to a B rating. Sucampo Pharmaceuticals is a biopharmaceutical company focused on the discovery, development and commercialization of proprietary drugs based on prostones, a class of compounds derived from functional fatty acids that occur naturally in the human body. For more information, get Portfolio Grader’s complete analysis of SCMP stock.

This week, Pfizer (NYSE:PFE) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Pfizer is a research-based, global pharmaceutical company that discovers, develops, manufactures, and markets medicines for humans and animals. For more information, get Portfolio Grader’s complete analysis of PFE stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.