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RecruitingNCT06079918MMS-MAPUpdated Jul 14, 2026

Multiple Micronutrient Supplementation for Maternal Anemia Prevention in Tanzania

A Phase 3 interventional study of Multiple Micronutrient Supplements with 30 mg of elemental iron and Multiple Micronutrient Supplements with 45 mg of elemental iron in Pregnancy Related, sponsored by George Washington University. Recruiting at 1 site in Tanzania. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-14.

Sponsored by George Washington University · Phase 3, Interventional, and Prevention

From the registry’s dates

  • Started Mar 2025; still recruiting 1 year 8 months later.
Phase
Phase 3
Study type
Interventional
Enrollment
6,381
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

This is an individually randomized controlled trial to assess the effect of multiple micronutrient supplements (MMS) containing 60 and 45 mg iron as compared to MMS containing 30 mg of iron (standard UNIMMAP formulation) on maternal moderate or severe anemia. This study will help inform countries like Tanzania that currently use IFA containing 60 mg of iron regarding the dose of iron to use in MMS.

02

Conditions studied

  • Pregnancy Related

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Keywords

  • Pregnancy
  • Multiple Micronutrient Supplementation
  • Iron
  • Anemia
  • Tanzania
03

In context

Anemia

1,810 studies on the registry are indexed under Anemia; 215 are open to participants now.

This study's planned enrollment of 6,381 is above the median of 117 across 1,336 interventional studies indexed under Anemia.

Browse Anemia studies →

Lead sponsor

George Washington University is the lead sponsor of 192 studies on the registry; 34 are open to participants now.

Of its 13 completed or terminated interventional studies of FDA-regulated products, 11 (85%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Attending first ANC visit at study clinics
  • Pregnant women \< 20 weeks gestation by last menstrual period (LMP)
  • Aged ≥ 18 years old
  • Intending to stay in Dar es Salaam until 6 weeks post delivery
  • Provides

Exclusion criteria

Exclusion Criteria:

  • Severe anemia (defined as \< 8.5 g/dL per Tanzania standard of care)
  • Sickle cell disease (SS and SC) and hemoglobin C disease (CC) as tested by HemoTypeSC
  • Concurrently enrolled in another nutritional clinical trial
  • Pregnant women with disability or condition which would impair their ability to provide and complete study procedures.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
6,381 participants (estimated)

Study arms

  • Active comparator
    MMS with 30 mg iron

    MMS with standard UNIMMAP formulation of 15 micronutrients, including 30 mg of iron

    Dietary Supplement: Multiple Micronutrient Supplements with 30 mg of elemental iron

  • Experimental
    MMS with 45 mg iron

    MMS with 45 mg of iron plus standard UNIMMAP formulation for other 14 micronutrients

    Dietary Supplement: Multiple Micronutrient Supplements with 45 mg of elemental iron

  • Experimental
    MMS with 60 mg iron

    MMS with 60 mg of iron plus standard UNIMMAP formulation for other 14 micronutrients

    Dietary Supplement: Multiple Micronutrient Supplements with 60 mg of elemental iron

Interventions

  • Dietary supplementMultiple Micronutrient Supplements with 30 mg of elemental iron

    MMS with 30 mg iron is the active comparator group. The standard UNIMMAP MMS formulation includes 30 mg of iron which will be taken orally once daily from the time of randomization until delivery.

  • Dietary supplementMultiple Micronutrient Supplements with 45 mg of elemental iron

    MMS with 45 mg iron is an intervention group. MMS with 45 mg of iron plus standard UNIMMAP formulation for other 14 micronutrients will be taken orally once daily from the time of randomization until delivery.

  • Dietary supplementMultiple Micronutrient Supplements with 60 mg of elemental iron

    MMS with 60 mg iron is an intervention group. MMS with 60 mg of iron plus standard UNIMMAP formulation for other 14 micronutrients will be taken orally once daily from the time of randomization until delivery.

06

What researchers measure

Primary outcomes

  1. Proportion of pregnant women with third-trimester moderate or severe anemia

    Defined as a hemoglobin concentration \<10 g/dL.

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

Secondary outcomes

  1. Maternal hemoglobin concentration

    Continuous hemoglobin concentration measured from venous blood by complete blood count

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  2. Maternal hemoglobin concentration

    Continuous hemoglobin concentration measured from venous blood by complete blood count

    Time frame: 6 weeks postpartum

  3. Proportion of pregnant women with anemia

    Hb concentration \< 11 g/dL

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  4. Proportion of postpartum women with anemia

    Hb concentration \< 12 g/dL

    Time frame: 6 weeks postpartum

  5. Maternal serum ferritin

    Inflammation-adjusted serum ferritin

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  6. Proportion of pregnant women with iron deficiency

    Inflammation-adjusted serum ferritin \< 15 ug/L

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  7. Proportion of pregnant women with iron deficiency anemia

    Anemia (Hb \< 11 g/dL) and iron deficiency (inflammation-adjusted serum ferritin \< 15 ug/L)

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  8. Proportion of women with preeclampsia

    Gestational hypertension and gestational proteinuria among participants without chronic hypertension or gestational proteinuria among participants with chronic hypertension (superimposed preeclampsia) or clinical diagnosis of preeclampsia by managing clinical team or development of severe features of preeclampsia even in the absence of proteinuria

    Time frame: From 20 weeks gestation through delivery

  9. Proportion of women with antepartum bleeding

    Self-reported or clinical diagnosis of bleeding from or into the genital tract

    Time frame: From 24 weeks gestation through delivery

  10. Proportion of women with postpartum hemorrhage

    Clinical diagnosis of postpartum hemorrhage or use of critical interventions to treat postpartum hemorrhage

    Time frame: From delivery through 42 days post delivery

  11. Proportion of women with infection-related severe maternal outcomes

    Severe infection-related such as hospitalization for infection, women presenting with WHO near-miss criteria to define organ system dysfunction, invasive procedure to treat the source of infection (vacuum aspiration, dilatation and curettage, wound debridement, drainage, laparotomy and lavage, other surgery), or maternal death from infection.

    Time frame: During pregnancy through 42 days postpartum

  12. Proportion of women with pregnancy-related death

    Death of a woman while pregnant or within 42 days of termination of pregnancy, irrespective of the cause of death

    Time frame: Pregnancy through 42 days of pregnancy termination

  13. Proportion of women with symptoms consistent with depression

    Patient Health Questionnaire-9 (PHQ-9) score ranging from 0 to 27, with higher scores consistent with depression and anxiety

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  14. Proportion of women with symptoms consistent with depression

    Patient Health Questionnaire-9 (PHQ-9) score ranging from 0 to 27, with higher scores consistent with depression and anxiety

    Time frame: 6 weeks postpartum

  15. Proportion of women with symptoms consistent with fatigue

    FACIT assessment score ranging from 0 to 52, with lower scores consistent with fatigue.

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  16. Proportion of women with symptoms consistent with fatigue

    FACIT assessment score ranging from 0 to 52, with lower scores consistent with fatigue.

    Time frame: 6 weeks postpartum

  17. Proportion of women with malaria infection

    Based on HRP2 biomarker or rapid-diagnostic tests (RDTs)

    Time frame: Pregnancy through 42 days postpartum

  18. Proportion of fetal deaths

    A product of human conception, irrespective of the duration of the pregnancy, which, after expulsion or extraction, does not breath or show any other evidence of life such as beating of the heart, pulsation of the umbilical cord, or definite movement of voluntary muscles, whether or not the umbilical cord has been cut or the placenta is attached

    Time frame: At pregnancy termination (weeks 1-42 of pregnancy)

  19. Proportion of stillbirths

    Fetal death ≥ 28 weeks gestation

    Time frame: At pregnancy termination (weeks 1-42 of pregnancy)

  20. Birthweight

    Continuous birthweight among live births

    Time frame: At birth

  21. Proportion of live births with low birthweight

    Live birth with birthweight \< 2500 g

    Time frame: At birth

  22. Gestational age at birth

    Duration of gestation in weeks as a continuous measure among live births based on best obstetric estimate among live births

    Time frame: At birth

  23. Proportion of preterm live births

    Live birth \<37 weeks gestation (based on best obstetric estimate)

    Time frame: At birth

  24. Birthweight for gestational age

    Continuous centile based on INTERGROWTH-21st standard birth centile among live births

    Time frame: At birth

  25. Proportion of small-for-gestational age live births (<10th percentile)

    Size-for-gestational age \<10th on the INTERGROWTH-21st standard among live births

    Time frame: At birth

  26. Proportion of small-for-gestational age live births (<3rd percentile)

    Size-for-gestational age \<3rd percentile on the INTERGROWTH-21st standard among live births

    Time frame: At birth

  27. Infant hemoglobin concentration

    Continuous Hb concentration measured from capillary blood by complete blood count

    Time frame: At 6 weeks of age

  28. Infant serum ferritin

    Continuous inflammation adjusted serum ferritin

    Time frame: At 6 weeks of age

  29. Proportion of infants with iron deficiency

    Inflammation-adjusted serum ferritin \< 20 ug/L

    Time frame: At 6 weeks of age

  30. Proportion of neonatal deaths

    Death of liveborn infant during the first 28 completed days of life

    Time frame: From birth to 28 days of age

  31. Proportion of infant deaths < 42 days

    Death of a live born infant during the first 42 completed days of life

    Time frame: From birth to 42 days of age

Other outcomes

  1. Percent adherence

    The percentage of days a pregnant woman takes a MMS pill out of the total number of days from randomization to delivery

    Time frame: During pregnancy (up to week 42)

  2. Diarrhea

    Self-reported any diarrhea symptoms during the intervention period

    Time frame: During pregnancy (up to week 42)

  3. Heartburn

    Self-reported any heartburn symptoms during the intervention period

    Time frame: During pregnancy (up to week 42)

  4. Constipation

    Self-reported any constipation symptoms during the intervention period

    Time frame: During pregnancy (up to week 42)

  5. Vomiting

    Self-reported any vomiting symptoms during the intervention period

    Time frame: During pregnancy (up to week 42)

  6. Nausea

    Self-reported any nausea symptoms during the intervention period

    Time frame: During pregnancy (up to week 42)

  7. Leg Cramps

    Self-reported any leg cramps during the intervention period

    Time frame: During pregnancy (up to week 42)

  8. Low back/pelvic pain

    Self-reported any low back/pelvic pain during the intervention period

    Time frame: During pregnancy (up to week 42)

  9. Maternal blood lead concentration

    Continuous blood lead concentration measured from whole blood

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

  10. Maternal plasma zinc concentration

    Continuous zinc concentration measured from plasma

    Time frame: 3rd trimester (weeks 28-42 of pregnancy)

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Smith ER, Muhihi A, Wylie BJ, Mugusi S, Aboud S, Bakari M, Fawzi W, Kinyogoli S, Oakley EM, Pan Q, Sando MM, Brownlee VS, Pembe AB, Sudfeld CR, Masanja H. Multiple micronutrient supplementation for maternal anemia prevention (MMS-MAP): an individually randomized trial of higher-dose iron (60 mg, 45 mg) compared to low-dose iron (30 mg) in multiple micronutrient supplements in pregnancy. Trials. 2025 Jun 14;26(1):206. doi: 10.1186/s13063-025-08906-7. PubMed 40517226 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Mar 2025 (actual). Primary completion is estimated for Mar 2027, 24 months after the start.

Of 52 non-industry phase 3 interventional studies under Anemia, half reached primary completion within 44 months of starting (the median), counting those still running; a quarter within 21 and three quarters within 59. This study's planned 24 months is below that.

Counting every sponsor, half of 150 studies reached it within 30 months; a quarter within 17 and three quarters within 51.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 25, 2023
First posted
Oct 12, 2023
StartActual
Mar 3, 2025
Primary completionEst.
Mar 2027
CompletionEst.
Jun 2027
Last update
Jul 14, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 14, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06079918
Collaborators
Ifakara Health Institute, Harvard School of Public Health (HSPH), Muhimbili University of Health and Allied Sciences, Africa Academy for Public Health, Columbia University
Responsible party
Emily Smith (Principal Investigator, George Washington University) — Principal investigator
First posted
Oct 12, 2023
Start date
Mar 3, 2025
Primary completion
Mar 2027 (estimated)
Completion
Jun 2027 (estimated)
Last update
Jul 14, 2026

Study contacts

Emily R Smith, ScD, MPH
Contact
emilysmith@gwu.edu
202-994-3589
Christopher R Sudfeld, ScD, ScM
Contact
csudfeld@hsph.harvard.edu
Blair Wylie, MD, MPH
principal investigator · Columbia University
Honorati Masanja, PhD
principal investigator · Ifakara Health Institute
Alfa Muhihi, MD, MPH
principal investigator · Africa Academy for Public Health
Andrea Pembe, MD, MMed, PhD, FCOG
principal investigator · Muhimbili University of Health and Allied Sciences
Emily R Smith, ScD, MPH
principal investigator · The Goerge Washington University
Christopher R Sudfeld, ScD, ScM
principal investigator · Harvard University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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