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Iron Bisglycinate - The Easily Absorbed Iron

January 08, 2019 2 min read 13 Comments

Iron Bisglycinate - The Easily Absorbed Iron


Iron bisglycinate is a specialized form of iron that’s easily absorbed without the typical negative gastrointestinal side effects that come with standard iron pills. 

Forms of iron like ferrous gluconate and ferrous sulfate can often cause nausea, constipation, dark stools and even vomiting, because they’re poorly absorbed.

Iron is vital for red blood cell formation; low iron stores can lead to anemia, which is a shortage of red blood cells. Once a person becomes anemic, it can take at least 3 months to return to normal blood levels. Athletes, vegans/vegetarians, and women have a greater risk of becoming anemic than other people.

Staying up on your iron will prevent you from becoming anemic, and having to deal with all the negative symptoms that come with it!

Best Uses for Iron Bisglycinate

  • Iron Deficiency anemia
  • Symptoms of iron deficiency include weakness, dizziness, shortness of breath, fatigue and others
  • Iron bisglycinate is ideal for those who can’t tolerate standard iron pills
  • Endurance athletes require more iron than non-athletes
  • Women with extremely heavy menstruation
  • Be sure to get a simple iron and ferritin test before supplementing

Here’s How Iron Bisglycinate Works

Easily absorbed ironIron bisglycinate contains 25mg elemental iron attached to a glycine molecule which greatly enhances its absorption. Because it’s more quickly absorbed, it doesn’t sit around in your gut causing all of those nasty GI side effects.

People who really need to take iron will be more likely to use this form since it has none of the typical iron side effects.

Inadequate iron leads to diminished production of red blood cells. Red blood cells carry oxygen and the nutrients our cells need - without enough of them, our health suffers greatly. Fatigue, shortness of breath, heart palpitations, weakness, dizziness and overall reduced performance are hallmark symptoms of low iron.

It’s important to have your iron stores checked, at least 1 time a year and more often if you have a history of anemia, eat a vegetarian diet, or have heavy menstruation. Don’t let yourself slip into anemia - it will crush your performance and it takes months to recover!

13 Responses

Lisa Rena
Lisa Rena

October 11, 2023

My daughter has ulcerative colitis and her iron levels are okay on the lower end but her saturation is low at 14 (15 and above is normal range)
Dr. recommended her take ferrous sulfate and she had major cramps, gas and bloating. We had to discontinue.

I did my own research and saw that many iron supplements will cause IBD to worsen due to the destruction of the micrbiome in the gut.

I’m looking at the iron biglysinate as an alternative and wanted to know if you knew if anyone who has Inflammatory bowel disease and had success using it?
Thanks

Ed Shineman
Ed Shineman

October 02, 2023

I have low ferritin (10.2) and my doctor recommended 65 mg of ferrous sulfate daily. When I experienced significant problems breathing I switched to taking 58 mg of ferrous bisglycinate daily. Is this an equivalent dose? Is the bioavailability similar? Also, I am still experiencing some breathing problems. Could this possibly be a reaction to the ferrous bisglycinate?

Dr Jason Barker
Dr Jason Barker

September 05, 2023

Bien, most people supplement with one capsule of Iron Bisglycinate – others may need more or less depending on their individual needs. Best to work with his doctor for proper dosing based on his condition.

Bien Msia
Bien Msia

September 05, 2023

What do you recommend as appropriate dosage of iron bisglycinate for a 84 year old who has iron deficiency & anemic (has low rbc)?
Will taking 50mg a day (2 tabs) be too much? And is it better to take the 2 tabs separately, e.g., 1 tab in am and 2nd tab in evening? Thank you.

Dr. Jason Barker
Dr. Jason Barker

February 06, 2023

Hi Lisa – if you’re that frequent of a blood donor, I would suggest you ask the donation center to run your ferritins for you, since you’re donating so much and so that you can stay on top of your health. Otherwise a ferritin is extremely cheap, for example you could have it drawn at a local lab for around $7 or so.

Lisa Hansen
Lisa Hansen

February 06, 2023

As a regular blood donor (over 100 times) who has always had excellent hemoglobin, I unfortunately had very low ferritin for at least 3 decades. Based on the fact that one blood donation results in loss of ~30 point drop in ferritin how often can I donate blood if I take 25 mg Ferrous Bisglycinate daily? My ferritin might be ~130 at time of donating blood then it would be ~100 afterwards then I would need a few months to rebuild it back up to ~130. My medical coverage only allows for one ferritin blood test per year.

Dr. Jason Barker
Dr. Jason Barker

February 02, 2023

Emily – yes any type of iron will raise ferritin levels. Iron bisglycinate is great for this because it’s a more gentle form of iron.

Emily Pierson
Emily Pierson

January 25, 2023

Does iron bisglysinate help raise ferritin level? I’m not anemic but have extremely low ferritin (it’s at a 9!) causing symptoms.

Jason Barker
Jason Barker

December 16, 2022

Jerel, we use iron bisglycinate in clinic quite a bit to raise iron stores – while lower dose it’s much more tolerable for people and yes we see changes in hemoglobin and hematocrit.

Jerel Blackburn
Jerel Blackburn

December 16, 2022

Is Iron bisglycinate 25mg equivalent to FeSO4 325 mg as far as the ability to boost iron reserves? Any effect on Hgb/Hct?

GEORGETA ODUSOTE
GEORGETA ODUSOTE

December 16, 2022

Urinary tract infections (UTIs) are usually caused by bacteria from poo entering the urinary tract. The bacteria enter through the tube that carries pee out of the body (urethra). Women have a shorter urethra than men.
You eat a lot of sugar. Bacteria that cause UTIs love feeding on sugar,
You have diabetes. Research shows that if you have diabetes, you’re more likely to get UTIs. …
You wipe from back to front. Wiping from back to front can transport E. coli, the bacteria that is most behind UTI…
You have lots of sex. The more sex you have, the likelier it is you might get a UTI, That’s because bacteria may move to the urethra from the vagina and from the perineum, which is the area between your vagina and your anus.

SO, IRON BYSGLYCINATE HAS NOTHING TO DO WITH UTI

Dr. Jason Barker
Dr. Jason Barker

November 19, 2022

Hi MaryAnn, no it does not cause a UTI.

MaryAnn ODonnell
MaryAnn ODonnell

November 19, 2022

Does iron biglysinate cause UTI?

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