Hello, and welcome to the forum.
We have a post concerning supplements that should be taken during the treatment. I’ll post all of the most important posts at the bottom of this message.
If you’re worried about iron, you should have you doctor to check it periodically during your treatment period in order to determine whether or not a supplement is needed. But keep in mind that herbs and herbal teas are recommended on the diet, and herbs contain some of the highest amounts of iron available. For example, thyme contains 687% of the recommended daily value per a 100g serving.
On the strict version of the diet, eggs are recommended as the major protein source, and of course eggs contain iron as well.
Let us know if you have other questions.