Created in 2007 (Netherlands), WHEN YOU NEED TO KNOW own 303 sister brands and 4958 competing brands. The WHEN YOU NEED TO KNOW brand is owned by Perrigo, a company listed in New York. The International Securities Identification Number (ISIN) of Perrigo is IE00BGH1M568. WHEN YOU NEED TO KNOW is part of the Drug Manufacturers activity sector.