Hello - curious as to max dose might be safe of ferrous sulfate to boost HGB in 3 weeks? She is on 325 mg twice day - could we bump up to three times daily? It was 10.6 jumped to 11.3 in 3 weeks - need to ensure at least 11.3 or higher for knee replacement 3/10 with prelabs 3/5. Another doctor took her off for bowel cap which has been canceled and not rescheduled and we are waffling as to whether we want to risk another week off iron or just postpone that procedure until after knee replacement. We plan to ask our doctor but that might take 48 hours or so and would kind of like to have an idea now? Thanks.