Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 4 Researches
8
USERS' SCORE
Good
Based on 107 Reviews
8
Supplement Facts
Serving Size: 1 Vegetable Capsule
Amount Per Serving
%DV
Iron (as iron bisglycinate chelate†)
25 mg
139%
Top Medical Research Studies
9
We evaluated how switching to ferric citrate hydrate (FCH) impacts nausea in women with iron deficiency anemia (IDA) who struggled with oral iron. In a multicenter study of 30 patients, those on FCH experienced significant improvements. Nausea scores dropped from 5.7 to 1.7, and the overall incidence of nausea decreased notably. Also, 80% reported better experiences compared to previous treatments.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
Read More
9
We conducted a study to examine the effectiveness of a specific iron supplement, emulsified microsomal ferric pyrophosphate (EMFP), in treating iron deficiency anemia among pregnant women. Our focus was not only on improving hemoglobin levels but also on alleviating related symptoms, including nausea.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
Read More
7
We explored the effects of daily versus three times weekly (TIW) oral iron supplementation on nausea in NCAA Division 1 female athletes. The study involved 33 athletes who were either in track and field or soccer. Participants were given either daily doses or TIW doses of ferrous bisglycinate over eight weeks.
Both groups showed an increase in serum ferritin levels, which is a marker of iron stores. However, the TIW regimen resulted in a smaller increase of about 5.17 μg/L, compared to an increase of 12.88 μg/L with the daily regimen. Notably, those taking daily supplements experienced significantly more nausea and constipation than those on the TIW schedule.
While the daily regimen may boost iron levels more effectively, it can come at the cost of increased gastrointestinal discomfort. Meanwhile, the TIW regimen offers a gentler option with fewer side effects, positioning it as a viable alternative for athletes concerned about nausea.
Both groups showed an increase in serum ferritin levels, which is a marker of iron stores. However, the TIW regimen resulted in a smaller increase of about 5.17 μg/L, compared to an increase of 12.88 μg/L with the daily regimen. Notably, those taking daily supplements experienced significantly more nausea and constipation than those on the TIW schedule.
While the daily regimen may boost iron levels more effectively, it can come at the cost of increased gastrointestinal discomfort. Meanwhile, the TIW regimen offers a gentler option with fewer side effects, positioning it as a viable alternative for athletes concerned about nausea.
Read More
Most Useful Reviews
9
No nausea experienced
9 people found this helpful
I have dealt with iron deficiency anaemia my entire adult life. I usually maintain my iron levels through diet but turned to Solgar's Gentle Iron when my haemoglobin fell to critical levels. It has low toxicity and is well-absorbed, unlike other supplements that upset my stomach. After taking it, my dizziness and darkening vision when standing quickly improved. I experienced no nausea or pain for five months. I recommend taking iron at night, avoiding food before and after, and combining it with vitamin C.
Read More
0
Severe nausea
9 people found this helpful
This product caused excruciating stomach cramps, diarrhoea, and severe nausea.
Read More
9
Nausea absent
8 people found this helpful
I took this iron for seven days post-menstruation, and I no longer felt dizzy. I suggest testing for ferritin levels. I did not experience nausea or any side effects. I am satisfied, as I used to get cold easily, which is a sign of low iron.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 4 Researches
8
- All Researches
9
We conducted a study to examine the effectiveness of a specific iron supplement, emulsified microsomal ferric pyrophosphate (EMFP), in treating iron deficiency anemia among pregnant women. Our focus was not only on improving hemoglobin levels but also on alleviating related symptoms, including nausea.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
Read More
9
We evaluated how switching to ferric citrate hydrate (FCH) impacts nausea in women with iron deficiency anemia (IDA) who struggled with oral iron. In a multicenter study of 30 patients, those on FCH experienced significant improvements. Nausea scores dropped from 5.7 to 1.7, and the overall incidence of nausea decreased notably. Also, 80% reported better experiences compared to previous treatments.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
Read More
7
We explored the effects of daily versus three times weekly (TIW) oral iron supplementation on nausea in NCAA Division 1 female athletes. The study involved 33 athletes who were either in track and field or soccer. Participants were given either daily doses or TIW doses of ferrous bisglycinate over eight weeks.
Both groups showed an increase in serum ferritin levels, which is a marker of iron stores. However, the TIW regimen resulted in a smaller increase of about 5.17 μg/L, compared to an increase of 12.88 μg/L with the daily regimen. Notably, those taking daily supplements experienced significantly more nausea and constipation than those on the TIW schedule.
While the daily regimen may boost iron levels more effectively, it can come at the cost of increased gastrointestinal discomfort. Meanwhile, the TIW regimen offers a gentler option with fewer side effects, positioning it as a viable alternative for athletes concerned about nausea.
Both groups showed an increase in serum ferritin levels, which is a marker of iron stores. However, the TIW regimen resulted in a smaller increase of about 5.17 μg/L, compared to an increase of 12.88 μg/L with the daily regimen. Notably, those taking daily supplements experienced significantly more nausea and constipation than those on the TIW schedule.
While the daily regimen may boost iron levels more effectively, it can come at the cost of increased gastrointestinal discomfort. Meanwhile, the TIW regimen offers a gentler option with fewer side effects, positioning it as a viable alternative for athletes concerned about nausea.
Read More
7
Ferric carboxymaltose reduces nausea
This randomized controlled trial explored how low-dose ferric carboxymaltose (FCM) affects hemoglobin levels and nausea in postpartum East Asian women. Participants received either an intravenous FCM infusion or oral iron for four weeks.
We found that while FCM significantly increased hemoglobin levels after two weeks, both treatments showed no significant difference in final hemoglobin results after four weeks.
Notably, the FCM group experienced fewer gastrointestinal side effects, including nausea, suggesting it may be a more comfortable option for new mothers.
We found that while FCM significantly increased hemoglobin levels after two weeks, both treatments showed no significant difference in final hemoglobin results after four weeks.
Notably, the FCM group experienced fewer gastrointestinal side effects, including nausea, suggesting it may be a more comfortable option for new mothers.
Read More
User Reviews
USERS' SCORE
Good
Based on 107 Reviews
8
- All Reviews
- Positive Reviews
- Negative Reviews
9
No nausea experienced
9 people found this helpful
I have dealt with iron deficiency anaemia my entire adult life. I usually maintain my iron levels through diet but turned to Solgar's Gentle Iron when my haemoglobin fell to critical levels. It has low toxicity and is well-absorbed, unlike other supplements that upset my stomach. After taking it, my dizziness and darkening vision when standing quickly improved. I experienced no nausea or pain for five months. I recommend taking iron at night, avoiding food before and after, and combining it with vitamin C.
Read More
0
Severe nausea
9 people found this helpful
This product caused excruciating stomach cramps, diarrhoea, and severe nausea.
Read More
9
Nausea absent
8 people found this helpful
I took this iron for seven days post-menstruation, and I no longer felt dizzy. I suggest testing for ferritin levels. I did not experience nausea or any side effects. I am satisfied, as I used to get cold easily, which is a sign of low iron.
Read More
9
No nausea noted
5 people found this helpful
This is a wonderful iron supplement with high quality and easily digestible components that do not cause irritation or nausea. I felt better while using this product, and in consultation with my nutritionist, I took it alongside vitamin C to improve absorption. I highly recommend it.
Read More
9
No gastrointestinal issues
5 people found this helpful
Solgar’s Gentle Iron is by far the most effective iron supplement I have used. It doesn't cause nausea or stomach discomfort—unlike many others I’ve tried. If you find this review helpful, please give it a thumbs up!
Read More
Frequently Asked Questions
9
Gentle on stomach
2 people found this helpful
I have consistently low haemoglobin and ferritin, and previous medications caused nausea. Solgar is gentle and easy to take, with no side effects. I've felt promising results after over a week, and will report back on my next blood test.
9
Soft iron noted
2 people found this helpful
I took this iron during my pregnancy, and in two weeks, it raised my haemoglobin levels without side effects or nausea. I feel no need to try other iron preparations now.
9
Nausea absent
8 people found this helpful
I took this iron for seven days post-menstruation, and I no longer felt dizzy. I suggest testing for ferritin levels. I did not experience nausea or any side effects. I am satisfied, as I used to get cold easily, which is a sign of low iron.
9
Quick results
3 people found this helpful
Over two months, I raised my haemoglobin from 90 to 136 with no nausea or constipation. I found it convenient and easy to take, taking two capsules daily, and I definitely recommend it.
9
No nausea experienced
9 people found this helpful
I have dealt with iron deficiency anaemia my entire adult life. I usually maintain my iron levels through diet but turned to Solgar's Gentle Iron when my haemoglobin fell to critical levels. It has low toxicity and is well-absorbed, unlike other supplements that upset my stomach. After taking it, my dizziness and darkening vision when standing quickly improved. I experienced no nausea or pain for five months. I recommend taking iron at night, avoiding food before and after, and combining it with vitamin C.
9
Energy boost noted
4 people found this helpful
The quality of Solgar’s iron is fantastic! My energy levels surged, and there’s no nausea or constipation. As a woman needing to replenish iron, this supplement has effectively improved my hair and overall vitality.
9
No nausea noted
5 people found this helpful
This is a wonderful iron supplement with high quality and easily digestible components that do not cause irritation or nausea. I felt better while using this product, and in consultation with my nutritionist, I took it alongside vitamin C to improve absorption. I highly recommend it.
9
Doctor recommended
2 people found this helpful
I was advised to take this iron, and thankfully, it does not cause nausea, even on an empty stomach. My hair loss has stopped as I also take folic acid and vitamin C for better iron absorption.
9
No stomach pain
2 people found this helpful
I've often suffered from stomach pain after taking iron supplements, but Solgar's formula is easy to digest with no side effects for me. It's crucial to take it with vitamin C and avoid combining it with zinc or fibre to maintain absorption.
9
Nausea resolved
2 people found this helpful
I’ve been taking this iron for two years, gradually raising my haemoglobin from 115 to 143. It eliminated the nausea I experienced with other supplements, and using vitamin C improved absorption.
9
We conducted a study to examine the effectiveness of a specific iron supplement, emulsified microsomal ferric pyrophosphate (EMFP), in treating iron deficiency anemia among pregnant women. Our focus was not only on improving hemoglobin levels but also on alleviating related symptoms, including nausea.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
Within 30 days of starting treatment with EMFP, we observed significant increases in hemoglobin levels, alongside marked improvements in serum ferritin and iron levels. As nausea is a common complaint among pregnant women, we noted a decrease in various symptoms, including nausea, breathlessness, and dizziness, which contributed to a better quality of life for the participants.
Notably, treatment compliance was remarkably high at 99.5%, indicating that the participants were committed to managing their anemia effectively. Importantly, we did not encounter any severe side effects related to the treatment, suggesting a favorable safety profile.
Overall, our findings support the idea that iron treatment can help alleviate nausea and other discomforts related to iron deficiency anemia in pregnancy, positively impacting both mother and baby.
9
We evaluated how switching to ferric citrate hydrate (FCH) impacts nausea in women with iron deficiency anemia (IDA) who struggled with oral iron. In a multicenter study of 30 patients, those on FCH experienced significant improvements. Nausea scores dropped from 5.7 to 1.7, and the overall incidence of nausea decreased notably. Also, 80% reported better experiences compared to previous treatments.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
Overall, our findings suggest that FCH not only enhances medication adherence but also effectively reduces nausea and improves quality of life in these patients.
References
- Srivastav A, Kshirsagar S, Adhav T, Ganu G, Shah A. Efficacy and Safety of Microsomal Ferric Pyrophosphate Supplement for Iron Deficiency Anemia in Pregnancy. Cureus. 2024;16:e57108. doi:10.7759/cureus.57108
- Schulte J, Peterson K, Thomsen T, Lentz S, Hall M, et al. Daily versus three times weekly dosing for treatment of iron deficiency nonanemia in NCAA Division 1 female athletes. PM R. 2024;16:316. doi:10.1002/pmrj.13172
- Nagao T, Takahashi K, Takahashi S, Yokomizo R, Samura O, et al. Low-dose ferric carboxymaltose vs. oral iron for improving hemoglobin levels in postpartum East Asian women: A randomized controlled trial. PLoS One. 2025;20:e0319795. doi:10.1371/journal.pone.0319795
- Wada-Hiraike O, Maruyama A, Mitobe Y, Iriyama T, Mori-Uchino M, et al. A Multicenter Single-Arm Study of Switching to Ferric Citrate Hydrate for Iron Deficiency Anemia in Patients Intolerant to Oral Iron: RIO-SWITCH. Adv Ther. 2025. doi:10.1007/s12325-025-03123-9
