Washington ( CNN ) -- The marketer of a popular children 's vitamin is refunding nearly $ 2.1 million to customers after acknowledging its pills contained only a fraction of a nutritional substance the packaging claimed . The vitamins ' packaging featured Disney princesses , Winnie the Pooh , Nemo and Spider-Man . Manufacturer NBTY and two of its subsidiaries , Rexall Sundown and NatureSmart , claimed in product advertising and on packaging that the vitamins contained a dose of DHA that would satisfy 100 % of a child 's daily requirement . But in some cases the vitamins contained only minuscule amounts of DHA , the Federal Trade Commission said . Vitamin D in pregnancy may protect infants from virus . The amount of DHA -- an omega-3 fatty acid found in fish -- in Disney and Marvel Complete Tablets equaled only one-thousandth of what the marketers claimed per serving for children age 4 and older . For smaller children , the discrepancy was even more significant . Only five-10-thousandths of what the company claimed the pills contained on the packaging was in a serving of Disney and Marvel Complete tablets for children ages 2 to 4 , court documents filed by the FTC alleged . The packaging claimed the DHA the vitamins contained would help vision and brain development in children . The FTC said those claims were unsupported . Sold at CVS Pharmacy , Wal-Mart , Target , Walgreens , Kroger , Kmart , Meijer and Rite Aid , as well as online , the boxes were priced at between $ 4 and $ 8 each . The refunds announced Tuesday stem from a case originally filed in 2010 against NBTY for making false and deceptive advertising claims about their nutritional supplements . Parents who believe they may have purchased the vitamins dating back to between May 1 , 2008 , and September 30 , 2010 , can file a claim through the FTC 's website . In Tuesday 's statement announcing the refunds , the FTC said customers have until October 12 to file a claim . Hidden dangers in vitamins , supplements ?
NBTY said the Disney- and Marvel-themed vitamins held a full daily dose of DHA . The FTC says each tablet had only a tiny fraction of that amount of the omega-3 fatty acid . Parents have until October 12 to file a claim seeking refunds .