Anemia/Dissented stomach due to possible Malabsorption Syndrome?

I have been battling severe iron anemia(12+ years) and B12 for number of years. My doctor has not been able to find a reason behind them( other than periods which are not overly heavy). For past couple of years I have been battling with dissented stomach ( I have had endoscopy and colonscopy done- nothing showed up). It goes away when I start taking the iron and b12 pills. It makes me lose lots of weight within couple of weeks. I am 53 kgs and 5'9. I suspect I might have an malabsorption syndrome.Are there any herbs available that can help me cure it? This has ruined best years of my life- I look terrible, no energy, Depression and memory problems. Tweet