I had Bypass surgery 12 years ago and now struggle with mega Vitamin and Mineral deficiency. Ferritin Level was 3.2 in November....thankfully my HGB was 11 ...I started Iron infusions twice weekly the First two weeks, then weekly. Its been now 2 1/2 months and my Ferritin ist still only Up to 5...HGB 12.8..the Rest of the vitmans are all far below normal. Iron infusions suck and the side effects are getting worse and Hanging on longer. My doctor gives me no answers. Any one Else have some experience with this? Advice? how Long does it take to get values Up....taking now 2 and 3 Times the dosage per phyician and Dietician.