Eagle,
Get a ferritin check before adding kelfer if you haven't had one recently. If you are going to start kelfer, continue the dose of Asunra you currently take, while you are beginning kelfer. I would suggest starting with 1000 mg kelfer daily for the first two weeks and observe for any side effects or problems using kelfer. If no real problems occur, double the dose to 2000 mg and continue for two more weeks. During this period, you will be getting the same chelation you have been from Asunra alone, with the added chelation of the kelfer. There should be no rush with kelfer as long as you maintain your dose of Asunra. It is very important to make sure your body is tolerating both drugs (most people can) before raising doses. When the iron load is quite high, patients will often take full doses of both chelators, so even this is potentially possible if your body can handle it and your liver and kidney values stay within range and your white cells don't drop. I would suggest that if all is going fine, to then raise the kelfer to 3000 mg daily for one month and then get a new ferritin check to see if any progress can be noted yet. At that time, I would want to re-examine the doses.