Magnesium Glycinate vs Citrate Ireland: What’s the Difference?
Ireland Reference Guide. Educational content only. Not medical advice. | Last updated: 2 July 2026
Magnesium Glycinate vs Magnesium Citrate in Ireland: What’s the Difference?
If you are comparing magnesium glycinate and magnesium citrate in Ireland, the practical differences usually relate to tolerance, compound structure, and label clarity.
Both forms provide elemental magnesium. The key comparison point is: How much elemental magnesium are you getting per serving, and how well do you tolerate it?
Quick Comparison
| Feature | Magnesium Glycinate | Magnesium Citrate |
|---|---|---|
| Compound | Magnesium bound to glycine (amino acid) | Magnesium bound to citric acid |
| Typical use | General supplementation | General supplementation |
| Tolerance | Often chosen where digestive tolerance is prioritised | Higher doses may loosen stools |
| Label focus | Check elemental magnesium per serving | Check elemental magnesium per serving |
Elemental Magnesium Matters Most
Compound name does not equal dose. Always check:
- Elemental magnesium per tablet or capsule
- Total daily serving size
- Clear dosing instructions
Two products can contain different compound weights but deliver the same elemental magnesium.
Ireland Intake Guidance (HSE)
The HSE lists typical adult magnesium needs as:
- 300 mg/day for men (19–64)
- 270 mg/day for women (19–64)
HSE also notes that more than 400 mg/day from supplements may cause diarrhoea, and that 400 mg/day or less from supplements is unlikely to cause harm for most adults.1
Regulatory context: under EU Commission Regulation 432/2012, magnesium carries authorised health claims, including that it contributes to normal muscle function, normal functioning of the nervous system, normal psychological function, and the reduction of tiredness and fatigue. These claims apply to magnesium as a nutrient at the required intake, not to any single form or brand.2
Absorption and Digestive Tolerance
Different magnesium salts vary in bioavailability. Research summaries from the U.S. NIH Office of Dietary Supplements note that certain forms, including magnesium citrate, are generally more bioavailable than magnesium oxide.3
Individual tolerance varies. If loose stools occur, reducing dose or splitting intake across the day may improve tolerance.
Which Should You Choose?
- If digestive tolerance is your priority, glycinate is commonly selected.
- If you are comparing cost per mg, citrate is widely available.
- In all cases, check elemental magnesium per serving.
Prefer glycinate? Quick picks
Prices include Irish VAT at 13.5% and were verified live. Food supplements, not medicines.
For full Ireland-specific guides:
Browse Magnesium Supplements (Ireland)
View Magnesium Collection – Ireland Delivery
Sources
- HSE. Vitamins and Minerals – Others (Magnesium guidance). https://www2.hse.ie/conditions/vitamins-and-minerals/others/
- European Commission. Nutrition and health claims (EU Register, Regulation 432/2012). https://ec.europa.eu/food/safety/labelling-and-nutrition/nutrition-and-health-claims_en
- NIH Office of Dietary Supplements. Magnesium Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/
Frequently Asked Questions (Ireland)
Is magnesium glycinate better absorbed than citrate?
Both forms are considered bioavailable. Absorption depends on dose and individual tolerance. Elemental magnesium per serving is more important than compound name alone.
How much magnesium per day is safe in Ireland?
HSE guidance notes 300 mg/day for men and 270 mg/day for women (19–64). More than 400 mg/day from supplements may cause diarrhoea.1
Why does magnesium sometimes cause loose stools?
Higher supplemental intakes can draw water into the intestine, leading to diarrhoea. Reducing dose often improves tolerance.
Where can I buy magnesium glycinate or citrate in Ireland?
Probiotic.ie stocks a range of magnesium glycinate and bisglycinate supplements in tablet and powder form, with tracked delivery across Ireland and free delivery over €75. Browse the magnesium collection to compare elemental magnesium per serving, format, and price.