Product review (5 stars): Filters may not remove heavy metals.
These are very good filters at a good price.  They should remove pharmaceuticals, which are mostly if not entirely organic molecules that bind very well to carbon.  I think the discussion around what they filter out has to do with contaminants like heavy metals (lead and mercury).  I don't think these filters remove these because they don't specifically say that they do.  Some of the filters from other vendors say they do remove heavy metals.  If you know you don't have heavy metals in your water, these are fine.  If you live in Detroit or a similar place, I would use a filter that specifically states that it removes heavy metals.