From the various flavors that have been available to the struggles of unveiling it nationwide, here's what you should know ...

This is a comparison to the 570 calories in McDonald's medium vanilla shake and 650 calories in a medium chocolate shake. As for the Oreo Shamrock McFlurry, the regular-sized dessert contains 460 ...

Through March 23, 25 cents from every Shamrock Shake sold at participating McDonald’s will be donated to Ronald McDonald House Charities, with a goal of $5 million. Ronald McDonald House Charities ...

This is comparison to the 570 calories in McDonald's medium vanilla shake and 650 calories in a medium chocolate shake. As for the Oreo Shamrock McFlurry, the regular-sized dessert contains 460 ...