Malabsorption

Hello all! I am 16 years postop. And I am experiencing my absorption issues. I am very iron deficient and I am unable to take oral iron. Last month they attempted to do an infusion and I had a severe reaction to this. Infusion had to be stopped tomorrow, they will be attempting another one, and I am terrified as the pain with the first one was very bad. Has anyone else experienced a problem with this or have any comments regarding this?
Also, I have read that intestinal parasites can cause iron deficiency before my bypass. I know I used to do cleanses, but I have been afraid to try that since the bypass does anyone have any recommendations or know anything about these things any help would be greatly appreciated thank you.

Well, I went for the infusion today and once again I failed. Reaction started but nurse was able to get it stopped before it got bad. Her name was Wanda and she was also a success story having undergone gastric sleeve 10 yrs ago. Excellent nurse on top of her game. Thank goodness for nurses like her.