Overview

SCIENTIFIC SCORE
Questionable
Based on 3 Researches
6.7
USERS' SCORE
Moderately Good
Based on 58 Reviews
7.1
Supplement Facts
Serving Size: 1 Vegetable Capsule
Amount Per Serving
%DV
Iron (as iron bisglycinate chelate†)
25 mg
139%

Top Medical Research Studies

9
Iron enhances piglet gut health
We explored how adding iron, specifically Fe-Gly, to piglets' diets could help combat diarrhea caused by enterotoxigenic E. coli (ETEC) infections. In our study, we administered 50 mg of Fe-Gly to weaned piglets that had been infected, monitoring their growth, diarrhea rates, and overall gut health.

We observed remarkable improvements in the piglets' growth performance, with increases in average daily feed intake and daily gain by over 30%. Most notably, the rate of diarrhea significantly decreased by 40%. Additionally, we found that this iron supplementation raised the levels of total iron binding capacity in piglet serum, suggesting better iron transport and utilization.

Beyond growth metrics, the addition of Fe-Gly also showed potential in alleviating intestinal damage incurred from the ETEC challenge. As a result, we conclude that Fe-Gly not only meets daily iron needs but also reduces the iron available for harmful gut bacteria, promoting better intestinal health in piglets suffering from infections.
Read More
7
Iron's mixed effects on diarrhea
We explored the effect of iron supplementation in the form of Micronutrient Powder (MNP) on the duration of diarrhea among infants aged 6 to 11 months. By analyzing longitudinal data, we utilized a sophisticated statistical approach that considered the unique patterns of each child’s health over time.

Our findings revealed some interesting trends. Initially, infants using low-dose iron seemed to experience a greater number of days with diarrhea compared to those who did not use it. However, this pattern flipped as time went on, suggesting that the immediate benefits may vary.

Additionally, we noticed that infants who practiced exclusive breastfeeding for the first six months and supplemented with MNP reported fewer instances of respiratory issues. Overall, we observed that while iron treatment had some impact on respiratory infections, its direct effect on diarrhea was not straightforward.

Therefore, while iron supplementation can be beneficial in some contexts, the results point towards a more complex interaction with diarrhea in infants. This emphasizes the necessity of further investigation into dietary and health practices to enhance child health in our communities.
Read More
4
No significant diarrhea increase
We conducted a study to evaluate how iron supplements and iron-containing micronutrient powders (MNPs) affect the gut microbiome and the incidence of diarrhea in infants from rural Bangladesh. Over the course of three months, we gave 923 infants either iron, MNPs, or a placebo while monitoring their gut health.

Interestingly, we found no significant increase in diarrhea among the infants receiving iron supplements or MNPs compared to those given the placebo. This gives us a bit of reassurance regarding the safety of these interventions. Our primary analysis showed no substantial changes in gut microbiome diversity or composition after the treatments.

However, it's worth noting that when we looked closer—without adjusting for multiple comparisons—we observed some changes. Infants receiving iron and MNPs showed a reduction in beneficial gut bacteria, like Bifidobacterium and Lactobacillus, alongside an increase in potentially harmful species like Clostridium. These shifts were more pronounced in infants who already had enough iron at the start of the study.

Overall, while there was no significant increase in diarrhea, the observed shifts in the gut microbiome could raise concerns, especially in well-nourished infants. Our findings highlight the need for further research to understand the complexities of iron treatment fully.
Read More

Most Useful Reviews

9.5
No diarrhea experienced
The best iron I have ever used. I experienced no side effects, and my analysis showed everything was fine. I used to have low haemoglobin, but now all indicators, including iron, are normal. The usual iron caused constant diarrhoea, which I do not recall with this product.
Read More
9.5
No side effects
The best iron! I took this during pregnancy for my anaemia. After two months, my iron deficiency improved, and my health got better—no diarrhoea or stomach pain. If you find this helpful, please like it!
Read More
0
Severe diarrhoea
Unfortunately, after three days, this iron supplement caused severe intestinal issues and diarrhoea, leading me to stop taking it.
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 3 Researches
6.7
  • All Researches
9
Iron enhances piglet gut health
We explored how adding iron, specifically Fe-Gly, to piglets' diets could help combat diarrhea caused by enterotoxigenic E. coli (ETEC) infections. In our study, we administered 50 mg of Fe-Gly to weaned piglets that had been infected, monitoring their growth, diarrhea rates, and overall gut health.

We observed remarkable improvements in the piglets' growth performance, with increases in average daily feed intake and daily gain by over 30%. Most notably, the rate of diarrhea significantly decreased by 40%. Additionally, we found that this iron supplementation raised the levels of total iron binding capacity in piglet serum, suggesting better iron transport and utilization.

Beyond growth metrics, the addition of Fe-Gly also showed potential in alleviating intestinal damage incurred from the ETEC challenge. As a result, we conclude that Fe-Gly not only meets daily iron needs but also reduces the iron available for harmful gut bacteria, promoting better intestinal health in piglets suffering from infections.
Read More
7
Iron's mixed effects on diarrhea
We explored the effect of iron supplementation in the form of Micronutrient Powder (MNP) on the duration of diarrhea among infants aged 6 to 11 months. By analyzing longitudinal data, we utilized a sophisticated statistical approach that considered the unique patterns of each child’s health over time.

Our findings revealed some interesting trends. Initially, infants using low-dose iron seemed to experience a greater number of days with diarrhea compared to those who did not use it. However, this pattern flipped as time went on, suggesting that the immediate benefits may vary.

Additionally, we noticed that infants who practiced exclusive breastfeeding for the first six months and supplemented with MNP reported fewer instances of respiratory issues. Overall, we observed that while iron treatment had some impact on respiratory infections, its direct effect on diarrhea was not straightforward.

Therefore, while iron supplementation can be beneficial in some contexts, the results point towards a more complex interaction with diarrhea in infants. This emphasizes the necessity of further investigation into dietary and health practices to enhance child health in our communities.
Read More
4
No significant diarrhea increase
We conducted a study to evaluate how iron supplements and iron-containing micronutrient powders (MNPs) affect the gut microbiome and the incidence of diarrhea in infants from rural Bangladesh. Over the course of three months, we gave 923 infants either iron, MNPs, or a placebo while monitoring their gut health.

Interestingly, we found no significant increase in diarrhea among the infants receiving iron supplements or MNPs compared to those given the placebo. This gives us a bit of reassurance regarding the safety of these interventions. Our primary analysis showed no substantial changes in gut microbiome diversity or composition after the treatments.

However, it's worth noting that when we looked closer—without adjusting for multiple comparisons—we observed some changes. Infants receiving iron and MNPs showed a reduction in beneficial gut bacteria, like Bifidobacterium and Lactobacillus, alongside an increase in potentially harmful species like Clostridium. These shifts were more pronounced in infants who already had enough iron at the start of the study.

Overall, while there was no significant increase in diarrhea, the observed shifts in the gut microbiome could raise concerns, especially in well-nourished infants. Our findings highlight the need for further research to understand the complexities of iron treatment fully.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 58 Reviews
7.1
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
No diarrhea experienced
The best iron I have ever used. I experienced no side effects, and my analysis showed everything was fine. I used to have low haemoglobin, but now all indicators, including iron, are normal. The usual iron caused constant diarrhoea, which I do not recall with this product.
Read More
9.5
No side effects
The best iron! I took this during pregnancy for my anaemia. After two months, my iron deficiency improved, and my health got better—no diarrhoea or stomach pain. If you find this helpful, please like it!
Read More
0
Severe diarrhoea
Unfortunately, after three days, this iron supplement caused severe intestinal issues and diarrhoea, leading me to stop taking it.
Read More
9.5
No gastrointestinal issues
I'm expecting a baby and my haemoglobin was at 98. Previous iron supplements caused dreadful diarrhoea. I hesitated before taking anything during pregnancy, but this gentle iron has been fine for a week. No intestinal problems so far, hence my five stars. I hope for a good blood test result soon.
Read More
9.5
Constipation avoided
I felt weak, and hair loss and brittle nails worried me. My haemoglobin is normal, but ferritin is 10. Since there is no anaemia, I decided to take this iron with my doctor's advice. I tolerate it well with no sickness or diarrhoea and am following guidelines for optimal absorption.
Read More

Frequently Asked Questions

Diarrhea is a condition characterized by the frequent passage of loose or watery stools, which can occur due to various factors, including infections, dietary choices, and underlying health conditions. It often results from the body's response to an irritation of the gastrointestinal tract, which can be caused by viruses, bacteria, parasites, or certain medications. While most cases tend to be short-lived and resolve on their own, diarrhea can lead to dehydration, especially in vulnerable populations such as young children and the elderly.

Managing diarrhea typically involves staying hydrated by drinking clear fluids and, when necessary, replenishing lost electrolytes. In some cases, over-the-counter medications may provide relief, although it’s essential to consult a healthcare professional for persistent or severe symptoms. A focus on bland, easy-to-digest foods can also help during recovery. Remember, if diarrhea persists for more than a couple of days or is accompanied by other concerning symptoms—like high fever, severe abdominal pain, or blood in stools—seeking medical attention is crucial.

Iron is a chemical element with the symbol Fe, derived from the Latin word "ferrum." It is a metal that is known for its strength and versatility, making it one of the most widely used materials in construction, manufacturing, and various industrial applications. Iron is the fourth most abundant element in the universe by mass and is primarily obtained through the mining of iron ores, such as hematite and magnetite. Once mined, it undergoes processes like smelting and refining to produce usable forms like cast iron, wrought iron, and steel.

In addition to its industrial uses, iron is also crucial for human health, as it plays a significant role in the production of hemoglobin, the protein in red blood cells responsible for transporting oxygen throughout the body. A deficiency in iron can lead to anemia, characterized by fatigue and weakened immunity. Overall, iron is a fundamental element that supports modern infrastructure and is vital for maintaining good health.

Based on user reviews, the timeline for seeing results when taking this iron supplement can vary significantly. Some users reported noticing improvements in their hemoglobin and an overall sense of well-being within a month of use, with claims such as "within a month, my haemoglobin rose significantly" (Read Review). Other reviews indicate longer periods without issues, such as a user feeling the benefits after more than 1.5 months (Read Review).

However, there are also reports of immediate adverse effects, with one user stating they experienced severe intestinal issues and diarrhea "after three days" (Read Review). These varied experiences highlight that while many find relief and improvement in their condition without side effects, others may react negatively soon after starting the supplement. In conclusion, some users note benefits within a month, while others may face challenges within days of use.

The evidence surrounding the efficacy of iron supplements for diarrhea is mixed and context-dependent. A study conducted on piglets demonstrated that the addition of iron, specifically Fe-Gly, significantly reduced the rate of diarrhea caused by ETEC infections by 40% while also promoting better gut health and growth performance [1]. Conversely, research focused on infants shows a less clear relationship. One study indicated that infants receiving iron supplements or iron-containing micronutrient powders did not experience a significant increase in diarrhea compared to those given a placebo [2]. Though no immediate rise in diarrhea was noted, it's essential to recognize potential shifts in gut microbiome composition, which could present concerns depending on the infant's initial iron status.

Another study noted that while low-dose iron treatments resulted in more days with diarrhea at first, this pattern shifted over time, suggesting that the long-term benefits of iron supplementation can be complex and may vary by individual context [3]. Overall, while some animal studies indicate benefits from iron supplementation in the management of diarrhea, particularly in specific infections, human studies reveal a need for caution and further research, especially among vulnerable populations like infants. Thus, consulting with a healthcare provider is crucial before considering iron supplements for diarrhea management.

Based on user reviews, many individuals have reported significant improvements in their symptoms after using this iron supplement, particularly in relation to anemia. Users have noted a rise in hemoglobin levels and overall positive health changes. For instance, one user mentioned that their "haemoglobin rose significantly" within a month without the side effects they experienced with other iron supplements (Read Review). Another user shared that after two months of use during pregnancy, their iron deficiency improved along with a general enhancement in health, all without the typical digestive discomfort such as diarrhea or stomach pain (Read Review).

Conversely, several users experienced adverse effects, emphasizing that individual results can vary widely. While one reviewer found relief from years of anemia without any side effects (Read Review), others reported severe intestinal issues and discomfort, leading them to discontinue use (Read Review)(Read Review). This diversity in experiences underscores the importance of considering personal tolerance and checking with healthcare providers when trying new supplements.

Users have shared mixed experiences regarding the combination of this iron supplement with other supplements or dietary practices. Some reported successfully taking it alongside vitamin C, noting that this combination enhanced its effectiveness without resulting in gastrointestinal issues. A user stated that they take it with lemon water or vitamin C for optimal results and experienced no side effects like diarrhoea, which they had with other iron types (Read Review). Additionally, another reviewer found the supplement gentle enough to use during pregnancy, which often involves heightened scrutiny over dietary supplements (Read Review).

Conversely, several users reported adverse reactions, particularly gastrointestinal discomfort, even when taking the supplement without other interactions. For instance, one reviewer experienced severe intestinal issues and diarrhoea just days after starting the supplement (Read Review). Another user mentioned having diarrhea despite following usage guidelines, thus highlighting the importance of personal tolerance (Read Review). These varied accounts illustrate that while some users benefit from integration with other supplements, others may face significant digestive side effects, hinting at the need for individualized approaches to supplementation.

Based on user reviews, the experience with iron supplements for treating diarrhea appears to vary significantly among individuals. Many users report success with certain formulations, such as a gentle iron supplement that did not cause any side effects, including diarrhea (Read Review). In contrast, some users experienced severe gastrointestinal issues with specific brands, indicating that the right dose may depend on the formulation and individual tolerance (review id='bde43c70-276a-4319-9efa-8e1b7b361e9b' and review id='d5a8d072-3e08-4894-ad20-8ddf159b5249').

Users take note of monitoring their response to different iron supplements closely, as those who have had prior issues with other iron preparations often find relief with gentler options that cause fewer disturbances (review id='920e8560-49df-41bd-a548-39410f6a0ab8' and review id='dc135d99-cbd1-410e-8c13-4d73bffe8d2f'). Ultimately, while some users recommend taking iron supplements as advised by their healthcare provider to optimize absorption and minimize side effects like diarrhea (Read Review), it’s clear that personal sensitivity plays a significant role in achieving the right dosage and formulation for effective treatment.

9.5
No bloating occurred
If you have signs of anaemia confirmed by tests, try this gentle iron! Within a month, my haemoglobin rose significantly. I experienced no side effects like bloating or diarrhoea, which I had with other iron types. I take it with lemon water or vitamin C for best results.
9.5
Positive dynamics
This is an excellent iron preparation, as my body couldn't tolerate the usual ones. Surprisingly, it also improved my bowel habits. I've been taking one tablet daily for over 1.5 months and am starting to feel the benefits; fatigue has diminished and hair loss is lessening.
0
Severe diarrhoea
Unfortunately, after three days, this iron supplement caused severe intestinal issues and diarrhoea, leading me to stop taking it.
9.5
No side effects
The best iron! I took this during pregnancy for my anaemia. After two months, my iron deficiency improved, and my health got better—no diarrhoea or stomach pain. If you find this helpful, please like it!
0
Unbelievable diarrhoea
This iron supplement caused me severe diarrhoea! I would advise using caution before trying it.
0
Not suitable
This supplement did not suit me. I took it once daily post-meal and still experienced diarrhoea. I had high hopes but will try iron in complex forms instead.
10
No diarrhoea experienced
I did not experience any side effects like bloating or diarrhoea compared to other pharmaceutical iron. This product works excellently for me, and I highly recommend it.
9
Iron enhances piglet gut health
We explored how adding iron, specifically Fe-Gly, to piglets' diets could help combat diarrhea caused by enterotoxigenic E. coli (ETEC) infections. In our study, we administered 50 mg of Fe-Gly to weaned piglets that had been infected, monitoring their growth, diarrhea rates, and overall gut health.

We observed remarkable improvements in the piglets' growth performance, with increases in average daily feed intake and daily gain by over 30%. Most notably, the rate of diarrhea significantly decreased by 40%. Additionally, we found that this iron supplementation raised the levels of total iron binding capacity in piglet serum, suggesting better iron transport and utilization.

Beyond growth metrics, the addition of Fe-Gly also showed potential in alleviating intestinal damage incurred from the ETEC challenge. As a result, we conclude that Fe-Gly not only meets daily iron needs but also reduces the iron available for harmful gut bacteria, promoting better intestinal health in piglets suffering from infections.
4
No significant diarrhea increase
We conducted a study to evaluate how iron supplements and iron-containing micronutrient powders (MNPs) affect the gut microbiome and the incidence of diarrhea in infants from rural Bangladesh. Over the course of three months, we gave 923 infants either iron, MNPs, or a placebo while monitoring their gut health.

Interestingly, we found no significant increase in diarrhea among the infants receiving iron supplements or MNPs compared to those given the placebo. This gives us a bit of reassurance regarding the safety of these interventions. Our primary analysis showed no substantial changes in gut microbiome diversity or composition after the treatments.

However, it's worth noting that when we looked closer—without adjusting for multiple comparisons—we observed some changes. Infants receiving iron and MNPs showed a reduction in beneficial gut bacteria, like Bifidobacterium and Lactobacillus, alongside an increase in potentially harmful species like Clostridium. These shifts were more pronounced in infants who already had enough iron at the start of the study.

Overall, while there was no significant increase in diarrhea, the observed shifts in the gut microbiome could raise concerns, especially in well-nourished infants. Our findings highlight the need for further research to understand the complexities of iron treatment fully.
7
Iron's mixed effects on diarrhea
We explored the effect of iron supplementation in the form of Micronutrient Powder (MNP) on the duration of diarrhea among infants aged 6 to 11 months. By analyzing longitudinal data, we utilized a sophisticated statistical approach that considered the unique patterns of each child’s health over time.

Our findings revealed some interesting trends. Initially, infants using low-dose iron seemed to experience a greater number of days with diarrhea compared to those who did not use it. However, this pattern flipped as time went on, suggesting that the immediate benefits may vary.

Additionally, we noticed that infants who practiced exclusive breastfeeding for the first six months and supplemented with MNP reported fewer instances of respiratory issues. Overall, we observed that while iron treatment had some impact on respiratory infections, its direct effect on diarrhea was not straightforward.

Therefore, while iron supplementation can be beneficial in some contexts, the results point towards a more complex interaction with diarrhea in infants. This emphasizes the necessity of further investigation into dietary and health practices to enhance child health in our communities.

References

  1. Gao Q, Zhang Y, Wu Y, Gu D, Chen J, et al. Dietary Fe-Gly supplementation attenuates enterotoxigenic (ETEC)-induced inflammation response and intestinal barrier dysfunction in piglets. Front Vet Sci. 2025;12:1537604. doi:10.3389/fvets.2025.1537604
  2. Baldi A, Braat S, Hasan MI, Bennett C, Barrios M, et al. Effects of iron supplements and iron-containing micronutrient powders on the gut microbiome in Bangladeshi infants: a randomized controlled trial. Nat Commun. 2024;15:8640. doi:10.1038/s41467-024-53013-x
  3. Yirdaw BE, Debusho LK, Samuel A. Application of longitudinal multilevel zero inflated Poisson regression in modeling of infectious diseases among infants in Ethiopia. BMC Infect Dis. 2024;24:927. doi:10.1186/s12879-024-09820-0
image