Taking a very large amount of zinc can worsen a copper deficiency. When supplementing with more than 30 mg of zinc a day, it is important to take a copper supplement. I suggest 2-3 mg a day for the copper supplement. You don't want to overdo your copper intake. Taking more than around 25 mg a day of iron supplements is a bad idea. For a male who is not a vegetarian, perhaps even around 25 mg of iron supplements every other day may still be too much. The important thing though is getting enough copper, B12, folic acid, vitamin c and zinc so your body can properly utilize the iron.