Magnesium Citrate
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Evidence Summary
Magnesium citrate is a magnesium salt used for metabolic health, kidney stone management, and bowel preparation. Research suggests it may play a role in reducing blood pressure and HbA1c in individuals with metabolic syndrome and is effective in clinical preparations for colonoscopies.
Evidence by Condition
Supplementation has been shown to decrease blood pressure and HbA1c in normomagnesemic subjects with metabolic syndrome (PMID: 34859788).
Magnesium citrate is used to manage metabolic risk factors in kidney stone formers with idiopathic hyperoxaluria (PMID: 39077820).
A combination of sodium picosulfate and magnesium citrate is used as an effective method for colonoscopy preparation (PMID: 26818765).
Effective Doses
Dose ranges not explicitly provided in the research snippets.
Key Findings
- Magnesium citrate supplementation decreased blood pressure and HbA1c in subjects with metabolic syndrome (PMID: 34859788).
- Magnesium citrate is an effective treatment for metabolic risk factors in kidney stone formers with idiopathic hyperoxaluria (PMID: 39077820).
- Magnesium citrate/sodium picosulfate is an effective alternative for colonoscopy preparation (PMID: 26818765).
Limitations
Much of the evidence for metabolic benefits is derived from small-scale pilot trials (e.g., N=13), and research is often focused on specific populations like those with hyperoxaluria.
Safety & Interactions
No specific contraindications or drug interactions were detailed in the provided research summaries.
AI-generated summary from 11 peer-reviewed studies. Not medical advice. Always consult a healthcare provider.
Claims vs. Evidence
| Claim Type | % of Products | Evidence Required | Status |
|---|---|---|---|
| All Other | 99% | Tier D (Unclassified) | ✅ Supported |
| Structure/Function | 83% | Tier C (DSHEA Structure/Function (no pre-approval)) | ⚠️ Unsupported |
| Nutrient | 61% | Tier D (Unknown) | ✅ Supported |
| Approved Health | 4% | Tier A (FDA Approved Health Claim (21 CFR 101.9)) | ⚠️ Unsupported |
| Qualified Health | 1% | Tier B (FDA Qualified Health Claim) | ⚠️ Unsupported |
| No Claim | 0% | Tier D (No claim on label) | ✅ Supported |
Research by Topic
Research Evidence (11)
**Phillips et al., 2015** | Cochrane Database Syst Rev | Meta Analysis Phillips Rebecca, Hanchanale Vishwanath S, ... Biyani C Shekhar. Citrate salts for preventing and treating calcium containing kidney stones in adults. Cochrane Database Syst Rev. ...
**Jehle et al., 2013** | J Clin Endocrinol Metab | Rct Jehle Sigrid, Hulter Henry N, Krapf Reto. Effect of potassium citrate on bone density, microarchitecture, and fracture risk in healthy older adults without osteoporosis: a randomized controlled t...
**Qi et al., 2023** | Clin Appl Thromb Hemost | Meta Analysis Qi Wenqian, Liu Jingyuan, Li Ang. Regional Citrate Anticoagulation or Heparin Anticoagulation for Renal Replacement Therapy in Patients With Liver Failure: A Systematic Review and Meta-Ana...
**Carvalho et al., 2017** | Urolithiasis | Meta Analysis Carvalho Maurício, Erbano Bruna Olandoski, ... Baena Cristina Pellegrino. Effect of potassium citrate supplement on stone recurrence before or after lithotripsy: systematic review and meta-anal...
IMPORTANCE: Although current guidelines suggest the use of regional citrate anticoagulation (which involves the addition of a citrate solution to the blood before the filter of the extracorporeal dialysis circuit) as first-line treatment for continuo...
**Jin et al., 2016** | Eur J Clin Pharmacol | Meta Analysis Jin Zheng, Lu Yi, ... Gong Biao. Systematic review and meta-analysis: sodium picosulfate/magnesium citrate vs. polyethylene glycol for colonoscopy preparation. Eur J Clin Pharmacol. 2016-May...
**Sellmeyer et al., 2002** | J Clin Endocrinol Metab | Rct Sellmeyer Deborah E, Schloetter Monique, Sebastian Anthony. Potassium citrate prevents increased urine calcium excretion and bone resorption induced by a high sodium chloride diet. J Clin End...
Magnesium (Mg) supplementation was shown to improve metabolic syndrome (MetS) parameters in hypomagnesemic patients. The current study evaluated the role of Mg in normomagnesemic individuals with MetS. Patients were randomly assigned to 400 mg Mg as ...
PURPOSE: The aim of this study was to assess the effect of vitamin D supplementation on ovulation rate in overweight subfertile women with PCOS undergoing ovulation induction. METHODS: This was a single center, parallel-groups, double-blind, and plac...
Clomiphene citrate (CC) in male hypogonadism increases testosterone (T) and estrogen levels by stimulating pituitary gonadotropin release. Our group confirmed these hormonal changes in a randomized, cross-over, double-blind trial of CC versus placebo...
Magnesium is one of the recommended treatments for calcium stone formers (CSFs) with hyperoxaluria. In this study, we compared the effect of magnesium oxide (MgO) or magnesium citrate (MgCit) with placebo on 24-hour urine (24-U) metabolites and the c...
Details
Magnesium Citrate
Overview
Magnesium citrate is a magnesium salt of citric acid, formed by combining magnesium carbonate or hydroxide with citric acid.
Properties
| Property | Value |
|---|---|
| Chemical Formula | Mg₃(C₆H₅O₇)₂ |
| Bioavailability | High |
| Elemental Mg Content | ~16% |
| Absorption | Good |
| Additional Effect | Mild laxative |
Advantages
- Good bioavailability: Soluble and well-absorbed
- Cost-effective: Generally less expensive than chelated forms
- Dual benefit: Magnesium plus mild laxative effect
- Well-studied: Extensive clinical data
Evidence for Sleep
- Nielsen et al. 2010 (PMID: 21199787): 320mg elemental Mg, no difference vs placebo on sleep quality (PSQI)
- Mixed results; bioavailability is good but efficacy depends on population
Evidence for Bowel Function
- Commonly used for constipation relief
- Citrate component draws water into intestines
- Faster onset than oxide but gentler than sulfate
Comparison to Other Forms
| Form | Bioavailability | GI Effect | Best For |
|---|---|---|---|
| Citrate | High | Mild laxative | Constipation, general use |
| Glycinate | High | Minimal | Sleep, anxiety |
| Oxide | Low | Moderate laxative | Not recommended |
| Threonate | High | Minimal | Cognition |
Related Entities
- magnesium — Parent mineral
- magnesium-glycinate — Alternative with less GI effect
- magnesium-oxide — Lower bioavailability form
Safety Notes
- May cause loose stools at higher doses
- Take with food to reduce GI upset
- Avoid if diarrhea is already present
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Frequently Asked Questions
What is magnesium citrate and what is it used for?
Magnesium citrate is a magnesium salt used for metabolic health, kidney stone management, and bowel preparation. It is also utilized in clinical settings for procedures such as colonoscopies.
Can magnesium citrate help with metabolic syndrome?
There is moderate evidence suggesting that magnesium citrate supplementation may help decrease blood pressure and HbA1c levels in individuals with metabolic syndrome. This effect has been observed in subjects with normal magnesium levels.
Does magnesium citrate help prevent kidney stones?
There is moderate evidence that magnesium citrate can be used to manage metabolic risk factors in individuals who form kidney stones due to idiopathic hyperoxaluria. It helps address the metabolic risks associated with stone formation.
Is magnesium citrate effective for colonoscopy preparation?
Yes, there is moderate evidence that a combination of magnesium citrate and sodium picosulfate is an effective method for colonoscopy preparation. It is used clinically to ensure the bowel is properly prepared for the procedure.
What is the recommended dose of magnesium citrate?
Specific effective dose ranges are not explicitly provided in the current research summaries. You should consult a healthcare professional to determine the appropriate dose for your specific health needs.
Are there any known drug interactions or safety concerns with magnesium citrate?
No specific drug interactions or contraindications were documented in the provided research summaries. However, you should always consult a doctor before starting a new supplement to ensure it is appropriate for you.
Who should avoid taking magnesium citrate?
The provided research does not list specific groups of people who should avoid magnesium citrate. Because no specific contraindications were detailed in the studied evidence, it is important to discuss your medical history with a physician before use.
Answers generated from research evidence. Not medical advice.