我就在Amazon上买了这两个,K2比钙片贵多了。你们买什么牌子的?
k2 $16,30 days supply
https://www.amazon.com/dp/B00CEYD5GG?psc=1&ref=ppx_yo2ov_dt_b_product_details
Caltrate $24,82 days supply
https://www.amazon.com/gp/product/B0013TFL1U/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1