Yes but the RDA is 600 IU. That's remarkably effective at preventing rickets, but not optimal. 5,000 IU seems to be closer to optimal, and well below the toxici

Yes but the RDA is 600 IU. That's remarkably effective at preventing rickets, but not optimal. 5,000 IU seems to be closer to optimal, and well below the toxicity levels. You know, so I've read... Edit: Good Job Team!