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Effect of Oral Magnesium Supplementation on Type II Diabetes Mellitus Guided by Serum Ionized Magnesium Level

The Effect of Oral Magnesium Supplementation on The Control and Outcomes of Type II Diabetes Mellitus Guided by Serum Ionized Magnesium Level: A Double-Blind Randomized Control Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05774015
Enrollment
247
Registered
2023-03-17
Start date
2023-09-25
Completion date
2025-09-11
Last updated
2025-09-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Magnesium Disorder, Type 2 Diabetes

Brief summary

Studies have shown that type 2 diabetic patients (T2DM) may have low serum magnesium levels leading to poor control and outcome of the disease. Supplementation with Mg might improve overall diabetic control and disease outcome. However, there is yet no consensus on whether the ionized (iMg) or the total Mg (tMg) level should be used as a basis to determine the status of Mg in the blood. Recently it was shown that iMg may correlate better with diabetes control than tMg. Therefore, Mg supplements to diabetic patients may improve their disease status. Unfortunately, and to the best of our knowledge all of the available trials on Mg supplementation guided by iMg levels were conducted on healthy volunteers rather than T2DM patients, and they were all for a short period of time (10 days to 10 weeks). Here we hypothesize that supplementations of T2DM patients with Mg based on serum iMg levels correlate better with diabetes control and prognosis. Such hypothesis is supported by a retrospective study that concluded that iMg correlate better with BP control than tMg. In addition, another trial that investigated the effects of three Mg dietary supplements; Mg oxide, Mg citrate and Mg carbonate on healthy female young adults, showed that only Mg oxide led to an increase in the levels of iMg and tMg concentrations when compared to baseline. Furthermore, a case-control study on older diabetic patients revealed a significant association between iMg and HbA1c. This study aims to investigate the effect of supplementing Mg oxide tablets versus placebo tablets guided by serum iMg levels in T2DM patients with or without hypomagnesemia on diabetic control and prognosis.

Interventions

DIETARY_SUPPLEMENTMagnesium Oxide tablet 500 mg

To supplement T2DM with Mg oxide tablets (500 mg total, 302 mg elemental) regardless on their magnesium level

Sponsors

Nova Biomedical
CollaboratorINDUSTRY
Sultan Qaboos University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

The Mg oxide tablets or placebo tablets (a total of 4 bottles, 90 tablets in each coded bottle) will be provided for each participant during the study period. The 4 bottles for each participant will be per-coded to match the randomization labels to ensure a double-blinded process

Intervention model description

A prospective double-blind RCT with a control group and an interventional group

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adults (≥18 years old). * Treated with oral hypoglycemic agents (OHA) ± insulin regimen. * Had HbA1c ≥ 7% in the last 3 months

Exclusion criteria

* HbA1c of \< 7%. * Fully dependent patients as per clinical frailty score * End stage renal disease (creatinine clearances (CrCl) at \< 10ml/min) * With neuromuscular disease * With active solid or hematological malignancies. * With cognitive disorders. * With the following regular medications (baloxavir marboxil, calcium/sodium polystyrene sulfate, raltegravir, or unithiol) due to X category drug-drug interaction (contraindicated combinations) when given concurrently Mg oxide

Design outcomes

Primary

MeasureTime frameDescription
Glycated hemoglobin (HbA1c%)3-month and 12-monthTo evaluate the reduction in HbA1c% levels after 3 and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.
Fasting Blood Glucose (FBG)3-month and 12-monthTo evaluate the reduction in FBG levels after 3 and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.

Secondary

MeasureTime frameDescription
Blood pressure3-month and 12-monthTo evaluate the reduction BP measurement after 3 months and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.
Emergency department (ED) visits, hospital admission, and length of hospital stay (LOS)3-month and 12-monthTo determine the rate of ED visits, hospital admission, and LOS after 3 months and 12 months of Mg supplementation between the interventional group verse the control group.
Serum creatinine3-month and 12-monthTo evaluate the rate of changes in serum creatinine after 3 and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.
lipid profile3-month and 12-monthTo evaluate the reduction in lipid profile after 3 and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.
Total dosage of insulin regimen3-month and 12-monthTo evaluate the pattern of total dosage adjustment in the insulin regimen after 3 months and 12 months of Mg supplementation versus placebo between the interventional group verse the control group.

Countries

Oman

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026