What Is Thrombotic Thrombocytopenic Purpura? Thrombotic thrombocytopenic purpura (TTP) is a rare blood disorder. In TTP, blood clots form in small blood vessels throughout the body. The clots can limit or block the flow of oxygen-rich blood to the body's organs, such as the brain, kidneys, and heart. As a result, serious health problems can develop.
If you are taking iron, the following foods should be avoided, or only taken in very small amounts, for at least 1 hour before or 2 hours after you take iron: 1  Cheese and yogurt. 2  Eggs. 3  Milk. Spinach.  Tea or 1  coffee. Whole-grain breads and cereals and  bran.
Tea and coffee have both been show to block the absorption of iron when drunk close to a meal. Drinking tea or coffee away from meals is a good idea when working to correct a low iron status. One study found that drinking it one hour before a meal is fine, but not one hour after.