oral Calcidefiol is significantly more potent than vitamin D3, and is a faster way to boost blood Calcidefiol, which is the purpose of ingesting vitamin D. I a

oral Calcidefiol is significantly more potent than vitamin D3, and is a faster way to boost blood Calcidefiol, which is the purpose of ingesting vitamin D. I assume that the researchers picked it (1) to increase the chances of seeing a significant effect, if there is one, and (2) because if hours are at stake in saving a person's life, the fastest boost may be needed.