great for low iron
I had low iron at the limit, i was having a hard time breathing with the mask on while i went into a store i was feeling like fainting and i was getting tired fast after effort. After i took this one pill a day in about 2-3 weeks i was feeling normal. i did not checked my blood again but i don't have the breathing problem with a mask now, i was able to attend a 3 hours long seminar with mask on with no discomfort and i also was able to resumed my daily walking / running. great product will buy again from this brand.