Among people who use dietary supplements, the most popular products at the end of 2010 were fish oil, multivitamins, vitamin D, calcium and CoQ10, according to a survey conducted by ConsumerLab.com, White Plains, NY. Use of vitamin D surged in 2010 to 56% of those surveyed, up from 48% in 2009 and 37% in 2008—a 52% increase over the two-year period. Fish oil continued its rise in popularity, used by 75% of those surveyed, up from 74% in 2009. Meanwhile, multivitamin use declined to 70% last year from 72% in 2009 and 74% in 2008.