How Much Vitamin D Should You Take? 4.83 (96.67%) 30 votes The safe dose of vitamin D supplementation to get most of the population to the optimal level is 2,000 IU a day, but the elderly and overweight may need more.
roadblock. 1  n any condition that makes it difficult to make progress or to achieve an objective. 2  n a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
stumbling blocknoun [ C ] uk â /ËstÊm.bÉl.ÉªÅ ËblÉk/ us â /ËstÊm.bÉl.ÉªÅ ËblÉËk/. âº something that prevents action or agreement: Lack of willingness to compromise on both sides is the main/major stumbling block to reaching a settlement. Thesaurus: synonyms and related words. Difficult things and people. a (heavy) cross to bear idiom. a bitter pill (to swallow) idiom. a hard/tough nut to crack idiom.