Why is Exjade once daily? Because Novartis interviewed patients and asked them about a once daily chelator. Too simple. Of course everyone will say yes, but if they phrase the question, what about a once daily chelator, but the price you pay will be in your stomach, whereas twice daily with half dose will reduce stomach upset, which would you prefer? But they were so focused on the once per day, that they didn't really think it through. As I mentioned, the half life does reduce the effect as the day passes, and by the end of the 24 hour period, the chelating effect will be greatly reduced, but if it is taken twice daily, there is no increase in dose, but most likely there will be an increase in overall chelation, just as there is when you take a dose of desferal for 18 hours instead of 12 hours. The same dosage provides added chelation by stretching the dose out to ensure more of the 24 hour period is covered. Every doctor at the conferences stress that the goal should be chelation 24/7, and that was a strong hope with Exjade, but if half the dose is washed out in less than 24 hours, how much chelation can really take place during the latter hours? Splitting the dose in two will give a longer chelation period and may even have the potential to eventually lower the required dose for patients on maintenance dosing (maintenance dosing should be the goal for everyone using chelators).